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RetroArch/gfx/gfx_animation.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2014-2018 - Jean-André Santoni
* Copyright (C) 2011-2018 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
#include <string.h>
#include <compat/strl.h>
#include <encodings/utf.h>
#include <retro_math.h>
#include <retro_miscellaneous.h>
#include <string/stdstring.h>
#include <features/features_cpu.h>
#include <lists/string_list.h>
#include <array/rbuf.h>
#include "gfx_animation.h"
#include "../performance_counters.h"
#define TICKER_SPEED 333333
#define TICKER_SLOW_SPEED 1666666
/* Pixel ticker nominally increases by one after each
* TICKER_PIXEL_PERIOD ms (actual increase depends upon
* ticker speed setting and display resolution)
*
* Formula is: (1.0f / 60.0f) * 1000.0f
* */
#define TICKER_PIXEL_PERIOD (16.666666666666668f)
/* from https://github.com/kikito/tween.lua/blob/master/tween.lua */
static float easing_linear(float t, float b, float c, float d)
{
return c * t / d + b;
}
static float easing_in_out_quad(float t, float b, float c, float d)
{
t = t / d * 2;
if (t < 1)
return c / 2 * pow(t, 2) + b;
return -c / 2 * ((t - 1) * (t - 3) - 1) + b;
}
static float easing_in_quad(float t, float b, float c, float d)
{
return c * pow(t / d, 2) + b;
}
static float easing_out_quad(float t, float b, float c, float d)
{
t = t / d;
return -c * t * (t - 2) + b;
}
static float easing_out_in_quad(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_quad(t * 2, b, c / 2, d);
return easing_in_quad((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_in_cubic(float t, float b, float c, float d)
{
return c * pow(t / d, 3) + b;
}
static float easing_out_cubic(float t, float b, float c, float d)
{
return c * (pow(t / d - 1, 3) + 1) + b;
}
static float easing_in_out_cubic(float t, float b, float c, float d)
{
t = t / d * 2;
if (t < 1)
return c / 2 * t * t * t + b;
t = t - 2;
return c / 2 * (t * t * t + 2) + b;
}
static float easing_out_in_cubic(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_cubic(t * 2, b, c / 2, d);
return easing_in_cubic((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_in_quart(float t, float b, float c, float d)
{
return c * pow(t / d, 4) + b;
}
static float easing_out_quart(float t, float b, float c, float d)
{
return -c * (pow(t / d - 1, 4) - 1) + b;
}
static float easing_in_out_quart(float t, float b, float c, float d)
{
t = t / d * 2;
if (t < 1)
return c / 2 * pow(t, 4) + b;
return -c / 2 * (pow(t - 2, 4) - 2) + b;
}
static float easing_out_in_quart(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_quart(t * 2, b, c / 2, d);
return easing_in_quart((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_in_quint(float t, float b, float c, float d)
{
return c * pow(t / d, 5) + b;
}
static float easing_out_quint(float t, float b, float c, float d)
{
return c * (pow(t / d - 1, 5) + 1) + b;
}
static float easing_in_out_quint(float t, float b, float c, float d)
{
t = t / d * 2;
if (t < 1)
return c / 2 * pow(t, 5) + b;
return c / 2 * (pow(t - 2, 5) + 2) + b;
}
static float easing_out_in_quint(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_quint(t * 2, b, c / 2, d);
return easing_in_quint((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_in_sine(float t, float b, float c, float d)
{
return -c * cos(t / d * (M_PI / 2)) + c + b;
}
static float easing_out_sine(float t, float b, float c, float d)
{
return c * sin(t / d * (M_PI / 2)) + b;
}
static float easing_in_out_sine(float t, float b, float c, float d)
{
return -c / 2 * (cos(M_PI * t / d) - 1) + b;
}
static float easing_out_in_sine(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_sine(t * 2, b, c / 2, d);
return easing_in_sine((t * 2) -d, b + c / 2, c / 2, d);
}
static float easing_in_expo(float t, float b, float c, float d)
{
if (t == 0)
return b;
return c * powf(2, 10 * (t / d - 1)) + b - c * 0.001;
}
static float easing_out_expo(float t, float b, float c, float d)
{
if (t == d)
return b + c;
return c * 1.001 * (-powf(2, -10 * t / d) + 1) + b;
}
static float easing_in_out_expo(float t, float b, float c, float d)
{
if (t == 0)
return b;
if (t == d)
return b + c;
t = t / d * 2;
if (t < 1)
return c / 2 * powf(2, 10 * (t - 1)) + b - c * 0.0005;
return c / 2 * 1.0005 * (-powf(2, -10 * (t - 1)) + 2) + b;
}
static float easing_out_in_expo(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_expo(t * 2, b, c / 2, d);
return easing_in_expo((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_in_circ(float t, float b, float c, float d)
{
return(-c * (sqrt(1 - powf(t / d, 2)) - 1) + b);
}
static float easing_out_circ(float t, float b, float c, float d)
{
return(c * sqrt(1 - powf(t / d - 1, 2)) + b);
}
static float easing_in_out_circ(float t, float b, float c, float d)
{
t = t / d * 2;
if (t < 1)
return -c / 2 * (sqrt(1 - t * t) - 1) + b;
t = t - 2;
return c / 2 * (sqrt(1 - t * t) + 1) + b;
}
static float easing_out_in_circ(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_circ(t * 2, b, c / 2, d);
return easing_in_circ((t * 2) - d, b + c / 2, c / 2, d);
}
static float easing_out_bounce(float t, float b, float c, float d)
{
t = t / d;
if (t < 1 / 2.75)
return c * (7.5625 * t * t) + b;
if (t < 2 / 2.75)
{
t = t - (1.5 / 2.75);
return c * (7.5625 * t * t + 0.75) + b;
}
else if (t < 2.5 / 2.75)
{
t = t - (2.25 / 2.75);
return c * (7.5625 * t * t + 0.9375) + b;
}
t = t - (2.625 / 2.75);
return c * (7.5625 * t * t + 0.984375) + b;
}
static float easing_in_bounce(float t, float b, float c, float d)
{
return c - easing_out_bounce(d - t, 0, c, d) + b;
}
static float easing_in_out_bounce(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_in_bounce(t * 2, 0, c, d) * 0.5 + b;
return easing_out_bounce(t * 2 - d, 0, c, d) * 0.5 + c * .5 + b;
}
static float easing_out_in_bounce(float t, float b, float c, float d)
{
if (t < d / 2)
return easing_out_bounce(t * 2, b, c / 2, d);
return easing_in_bounce((t * 2) - d, b + c / 2, c / 2, d);
}
static size_t gfx_animation_ticker_generic(uint64_t idx,
size_t max_width, size_t *width)
{
int ticker_period = (int)(2 * (*width - max_width) + 4);
int phase = idx % ticker_period;
const int phase_left_stop = 2;
int phase_left_moving = (int)(phase_left_stop + (*width - max_width));
int phase_right_stop = phase_left_moving + 2;
*width = max_width;
if (phase < phase_left_stop)
return 0;
else if (phase < phase_left_moving) /* left offset */
return (phase - phase_left_stop);
else if (phase < phase_right_stop)
return (*width - max_width);
/* right offset */
return (size_t)(int)((*width - max_width) - (phase - phase_right_stop));
}
static void gfx_animation_ticker_loop(uint64_t idx,
size_t max_width, size_t str_width, size_t spacer_width,
size_t *offset1, size_t *width1,
size_t *offset2, size_t *width2,
size_t *offset3, size_t *width3)
{
int ticker_period = (int)(str_width + spacer_width);
int phase = idx % ticker_period;
/* Output offsets/widths are unsigned size_t, but it's
* easier to perform the required calculations with ints,
* so create some temporary variables... */
/* Looping text is composed of up to three strings,
* where string 1 and 2 are different regions of the
* source text and string 2 is a spacer:
*
* |-----max_width-----|
* [string 1][string 2][string 3]
*
* The following implementation could probably be optimised,
* but any performance gains would be trivial compared with
* all the string manipulation that has to happen afterwards...
*/
/* String 1 */
int offset = (phase < (int)str_width) ? phase : 0;
int width = (int)(str_width - phase);
width = (width < 0) ? 0 : width;
width = (width > (int)max_width) ? (int)max_width : width;
*offset1 = offset;
*width1 = width;
/* String 2 */
offset = (int)(phase - str_width);
offset = offset < 0 ? 0 : offset;
width = (int)(max_width - *width1);
width = (width > (int)spacer_width) ? (int)spacer_width : width;
width = width - offset;
*offset2 = offset;
*width2 = width;
/* String 3 */
width = (int)(max_width - (*width1 + *width2));
width = width < 0 ? 0 : width;
/* Note: offset is always zero here so offset3 is
* unnecessary - but include it anyway to preserve
* symmetry... */
*offset3 = 0;
*width3 = width;
}
static unsigned get_ticker_smooth_generic_scroll_offset(
uint64_t idx, unsigned str_width, unsigned field_width)
{
unsigned scroll_width = str_width - field_width;
unsigned pause_duration = 32;
unsigned ticker_period = 2 * (scroll_width + pause_duration);
unsigned phase = idx % ticker_period;
/* Determine scroll offset */
if (phase < pause_duration)
return 0;
else if (phase < ticker_period >> 1)
return (phase - pause_duration);
else if (phase < (ticker_period >> 1) + pause_duration)
return ((ticker_period - (2 * pause_duration)) >> 1);
return (ticker_period - phase);
}
/* 'Fixed width' font version of ticker_smooth_scan_characters() */
static void ticker_smooth_scan_string_fw(
size_t num_chars, unsigned glyph_width, unsigned field_width, unsigned scroll_offset,
unsigned *char_offset, unsigned *num_chars_to_copy, unsigned *x_offset)
{
unsigned chars_remaining = 0;
/* Initialise output variables to 'sane' values */
*char_offset = 0;
*num_chars_to_copy = 0;
*x_offset = 0;
/* Determine index of first character to copy */
if (scroll_offset > 0)
{
*char_offset = (scroll_offset / glyph_width) + 1;
*x_offset = glyph_width - (scroll_offset % glyph_width);
}
/* Determine number of characters remaining in
* string once offset has been subtracted */
chars_remaining = (*char_offset >= num_chars) ? 0 : num_chars - *char_offset;
/* Determine number of characters to copy */
if ((chars_remaining > 0) && (field_width > *x_offset))
{
*num_chars_to_copy = (field_width - *x_offset) / glyph_width;
*num_chars_to_copy = (*num_chars_to_copy > chars_remaining) ? chars_remaining : *num_chars_to_copy;
}
}
/* 'Fixed width' font version of gfx_animation_ticker_smooth_generic() */
static void gfx_animation_ticker_smooth_generic_fw(uint64_t idx,
unsigned str_width, size_t num_chars,
unsigned glyph_width, unsigned field_width,
unsigned *char_offset, unsigned *num_chars_to_copy, unsigned *x_offset)
{
unsigned scroll_offset = get_ticker_smooth_generic_scroll_offset(
idx, str_width, field_width);
/* Initialise output variables to 'sane' values */
*char_offset = 0;
*num_chars_to_copy = 0;
*x_offset = 0;
/* Sanity check */
if (num_chars < 1)
return;
ticker_smooth_scan_string_fw(
num_chars, glyph_width, field_width, scroll_offset,
char_offset, num_chars_to_copy, x_offset);
}
/* 'Fixed width' font version of gfx_animation_ticker_smooth_loop() */
static void gfx_animation_ticker_smooth_loop_fw(uint64_t idx,
unsigned str_width, size_t num_chars,
unsigned spacer_width, size_t num_spacer_chars,
unsigned glyph_width, unsigned field_width,
unsigned *char_offset1, unsigned *num_chars_to_copy1,
unsigned *char_offset2, unsigned *num_chars_to_copy2,
unsigned *char_offset3, unsigned *num_chars_to_copy3,
unsigned *x_offset)
{
unsigned ticker_period = str_width + spacer_width;
unsigned phase = idx % ticker_period;
unsigned remaining_width = field_width;
/* Initialise output variables to 'sane' values */
*char_offset1 = 0;
*num_chars_to_copy1 = 0;
*char_offset2 = 0;
*num_chars_to_copy2 = 0;
*char_offset3 = 0;
*num_chars_to_copy3 = 0;
*x_offset = 0;
/* Sanity check */
if ((num_chars < 1) || (num_spacer_chars < 1))
return;
/* Looping text is composed of up to three strings,
* where string 1 and 2 are different regions of the
* source text and string 2 is a spacer:
*
* |----field_width----|
* [string 1][string 2][string 3]
*/
/* String 1 */
if (phase < str_width)
{
unsigned scroll_offset = phase;
ticker_smooth_scan_string_fw(
num_chars, glyph_width, remaining_width, scroll_offset,
char_offset1, num_chars_to_copy1, x_offset);
/* Update remaining width
* Note: We can avoid all the display_width shenanigans
* here (c.f. gfx_animation_ticker_smooth_loop()) because
* the font width is constant - i.e. we don't have to wrangle
* out the width of the last 'non-copied' character since it
* is known a priori, so we can just subtract the string width
* + offset here, and perform an 'if (remaining_width > glyph_width)'
* for strings 2 and 3 */
remaining_width -= (*x_offset + (*num_chars_to_copy1 * glyph_width));
}
/* String 2 */
if (remaining_width > glyph_width)
{
unsigned scroll_offset = 0;
unsigned x_offset2 = 0;
/* Check whether we've passed the end of string 1 */
if (phase > str_width)
scroll_offset = phase - str_width;
else
scroll_offset = 0;
ticker_smooth_scan_string_fw(
num_spacer_chars, glyph_width, remaining_width, scroll_offset,
char_offset2, num_chars_to_copy2, &x_offset2);
/* > Update remaining width */
remaining_width -= (x_offset2 + (*num_chars_to_copy2 * glyph_width));
/* If scroll_offset is greater than zero, it means
* string 2 is the first string to be displayed
* > ticker x offset is therefore string 2's offset */
if (scroll_offset > 0)
*x_offset = x_offset2;
}
/* String 3 */
if (remaining_width > glyph_width)
{
/* String 3 is only shown when string 2 is shown,
* so we can take some shortcuts... */
*char_offset3 = 0;
/* Determine number of characters to copy */
*num_chars_to_copy3 = remaining_width / glyph_width;
*num_chars_to_copy3 = (*num_chars_to_copy3 > num_chars) ? num_chars : *num_chars_to_copy3;
}
}
static void ticker_smooth_scan_characters(
const unsigned *char_widths, size_t num_chars, unsigned field_width, unsigned scroll_offset,
unsigned *char_offset, unsigned *num_chars_to_copy, unsigned *x_offset,
unsigned *str_width, unsigned *display_width)
{
unsigned i;
unsigned text_width = 0;
unsigned scroll_pos = scroll_offset;
bool deferred_str_width = true;
/* Initialise output variables to 'sane' values */
*char_offset = 0;
*num_chars_to_copy = 0;
*x_offset = 0;
if (str_width)
*str_width = 0;
if (display_width)
*display_width = 0;
/* Determine index of first character to copy */
if (scroll_pos > 0)
{
for (i = 0; i < num_chars; i++)
{
if (scroll_pos > char_widths[i])
scroll_pos -= char_widths[i];
else
{
/* Note: It's okay for char_offset to go out
* of range here (num_chars_to_copy will be zero
* in this case) */
*char_offset = i + 1;
*x_offset = char_widths[i] - scroll_pos;
break;
}
}
}
/* Determine number of characters to copy */
for (i = *char_offset; i < num_chars; i++)
{
text_width += char_widths[i];
if (*x_offset + text_width <= field_width)
(*num_chars_to_copy)++;
else
{
/* Get actual width of resultant string
* (excluding x offset + end padding)
* Note that this is only set if we exceed the
* field width - if all characters up to the end
* of the string are copied... */
if (str_width)
{
deferred_str_width = false;
*str_width = text_width - char_widths[i];
}
break;
}
}
/* ...then we have to update str_width here instead */
if (str_width)
if (deferred_str_width)
*str_width = text_width;
/* Get total display width of resultant string
* (x offset + text width + end padding) */
if (display_width)
{
*display_width = *x_offset + text_width;
*display_width = (*display_width > field_width) ? field_width : *display_width;
}
}
static void gfx_animation_ticker_smooth_generic(uint64_t idx,
const unsigned *char_widths, size_t num_chars, unsigned str_width, unsigned field_width,
unsigned *char_offset, unsigned *num_chars_to_copy, unsigned *x_offset, unsigned *dst_str_width)
{
unsigned scroll_offset = get_ticker_smooth_generic_scroll_offset(
idx, str_width, field_width);
/* Initialise output variables to 'sane' values */
*char_offset = 0;
*num_chars_to_copy = 0;
*x_offset = 0;
if (dst_str_width)
*dst_str_width = 0;
/* Sanity check */
if (num_chars < 1)
return;
ticker_smooth_scan_characters(
char_widths, num_chars, field_width, scroll_offset,
char_offset, num_chars_to_copy, x_offset, dst_str_width, NULL);
}
static void gfx_animation_ticker_smooth_loop(uint64_t idx,
const unsigned *char_widths, size_t num_chars,
const unsigned *spacer_widths, size_t num_spacer_chars,
unsigned str_width, unsigned spacer_width, unsigned field_width,
unsigned *char_offset1, unsigned *num_chars_to_copy1,
unsigned *char_offset2, unsigned *num_chars_to_copy2,
unsigned *char_offset3, unsigned *num_chars_to_copy3,
unsigned *x_offset, unsigned *dst_str_width)
{
unsigned ticker_period = str_width + spacer_width;
unsigned phase = idx % ticker_period;
unsigned remaining_width = field_width;
/* Initialise output variables to 'sane' values */
*char_offset1 = 0;
*num_chars_to_copy1 = 0;
*char_offset2 = 0;
*num_chars_to_copy2 = 0;
*char_offset3 = 0;
*num_chars_to_copy3 = 0;
*x_offset = 0;
if (dst_str_width)
*dst_str_width = 0;
/* Sanity check */
if ((num_chars < 1) || (num_spacer_chars < 1))
return;
/* Looping text is composed of up to three strings,
* where string 1 and 2 are different regions of the
* source text and string 2 is a spacer:
*
* |----field_width----|
* [string 1][string 2][string 3]
*/
/* String 1 */
if (phase < str_width)
{
unsigned scroll_offset = phase;
unsigned display_width = 0;
unsigned str1_width = 0;
ticker_smooth_scan_characters(
char_widths, num_chars, remaining_width, scroll_offset,
char_offset1, num_chars_to_copy1, x_offset, &str1_width, &display_width);
/* Update remaining width */
remaining_width -= display_width;
/* Update dst_str_width */
if (dst_str_width)
*dst_str_width += str1_width;
}
/* String 2 */
if (remaining_width > 0)
{
unsigned scroll_offset = 0;
unsigned display_width = 0;
unsigned str2_width = 0;
unsigned x_offset2 = 0;
/* Check whether we've passed the end of string 1 */
if (phase > str_width)
scroll_offset = phase - str_width;
else
scroll_offset = 0;
ticker_smooth_scan_characters(
spacer_widths, num_spacer_chars, remaining_width, scroll_offset,
char_offset2, num_chars_to_copy2, &x_offset2, &str2_width, &display_width);
/* > Update remaining width */
remaining_width -= display_width;
/* Update dst_str_width */
if (dst_str_width)
*dst_str_width += str2_width;
/* If scroll_offset is greater than zero, it means
* string 2 is the first string to be displayed
* > ticker x offset is therefore string 2's offset */
if (scroll_offset > 0)
*x_offset = x_offset2;
}
/* String 3 */
if (remaining_width > 0)
{
/* String 3 is only shown when string 2 is shown,
* so we can take some shortcuts... */
unsigned i;
unsigned text_width = 0;
*char_offset3 = 0;
/* Determine number of characters to copy */
for (i = 0; i < num_chars; i++)
{
text_width += char_widths[i];
if (text_width <= remaining_width)
(*num_chars_to_copy3)++;
else
{
/* Update dst_str_width */
if (dst_str_width)
*dst_str_width += text_width - char_widths[i];
break;
}
}
}
}
static void gfx_animation_line_ticker_generic(uint64_t idx,
size_t line_len, size_t max_lines, size_t num_lines,
size_t *line_offset)
{
/* Mean human reading speed for all western languages,
* characters per minute */
float cpm = 1000.0f;
/* Base time for which a line should be shown, in us */
float line_duration = (line_len * 60.0f * 1000.0f * 1000.0f) / cpm;
/* Ticker updates (nominally) once every TICKER_SPEED us
* > Return base number of ticks for which line should be shown */
size_t line_ticks = (size_t)(line_duration / (float)TICKER_SPEED);
/* Note: This function is only called if num_lines > max_lines */
size_t excess_lines = num_lines - max_lines;
/* Ticker will pause for one line duration when the first
* or last line is reached (this is mostly required for the
* case where num_lines == (max_lines + 1), since otherwise
* the text flicks rapidly up and down in disconcerting
* fashion...) */
size_t ticker_period = (excess_lines * 2) + 2;
size_t phase = (idx / line_ticks) % ticker_period;
/* Pause on first line */
if (phase > 0)
phase--;
/* Pause on last line */
if (phase > excess_lines)
phase--;
/* Lines scrolling upwards */
if (phase <= excess_lines)
*line_offset = phase;
/* Lines scrolling downwards */
else
*line_offset = (excess_lines * 2) - phase;
}
static size_t gfx_animation_line_ticker_loop(uint64_t idx,
size_t line_len, size_t num_lines,
size_t *line_offset)
{
/* Mean human reading speed for all western languages,
* characters per minute */
float cpm = 1000.0f;
/* Base time for which a line should be shown, in us */
float line_duration = (line_len * 60.0f * 1000.0f * 1000.0f) / cpm;
/* Ticker updates (nominally) once every TICKER_SPEED us
* > Return base number of ticks for which line should be shown */
size_t line_ticks = (size_t)(line_duration / (float)TICKER_SPEED);
size_t ticker_period = num_lines + 1;
size_t phase = (idx / line_ticks) % ticker_period;
return phase;
}
static void set_line_smooth_fade_parameters(
bool scroll_up,
size_t scroll_ticks, size_t line_phase, size_t line_height,
size_t num_lines, size_t num_display_lines, size_t line_offset,
float y_offset,
size_t *top_fade_line_offset,
float *top_fade_y_offset, float *top_fade_alpha,
size_t *bottom_fade_line_offset,
float *bottom_fade_y_offset, float *bottom_fade_alpha)
{
/* When a line fades out, alpha transitions from
* 1 to 0 over the course of one half of the
* scrolling line height. When a line fades in,
* it's the other way around */
float fade_out_alpha = ((float)scroll_ticks - ((float)line_phase * 2.0f)) / (float)scroll_ticks;
float fade_in_alpha = -1.0f * fade_out_alpha;
fade_out_alpha = (fade_out_alpha < 0.0f) ? 0.0f : fade_out_alpha;
fade_in_alpha = (fade_in_alpha < 0.0f) ? 0.0f : fade_in_alpha;
*top_fade_line_offset = (line_offset > 0) ? line_offset - 1 : num_lines;
*top_fade_y_offset = y_offset - (float)line_height;
if (scroll_up)
{
*top_fade_alpha = fade_out_alpha;
*bottom_fade_alpha = fade_in_alpha;
}
else
{
*top_fade_alpha = fade_in_alpha;
*bottom_fade_alpha = fade_out_alpha;
}
*bottom_fade_line_offset = line_offset + num_display_lines;
*bottom_fade_y_offset = y_offset + (float)(line_height * num_display_lines);
}
static void set_line_smooth_fade_parameters_default(
size_t *top_fade_line_offset, float *top_fade_y_offset, float *top_fade_alpha,
size_t *bottom_fade_line_offset, float *bottom_fade_y_offset, float *bottom_fade_alpha)
{
*top_fade_line_offset = 0;
*top_fade_y_offset = 0.0f;
*top_fade_alpha = 0.0f;
*bottom_fade_line_offset = 0;
*bottom_fade_y_offset = 0.0f;
*bottom_fade_alpha = 0.0f;
}
static void gfx_animation_line_ticker_smooth_generic(uint64_t idx,
bool fade_enabled, size_t line_len, size_t line_height,
size_t max_display_lines, size_t num_lines,
size_t *num_display_lines, size_t *line_offset, float *y_offset,
bool *fade_active,
size_t *top_fade_line_offset, float *top_fade_y_offset, float *top_fade_alpha,
size_t *bottom_fade_line_offset, float *bottom_fade_y_offset, float *bottom_fade_alpha)
{
/* Mean human reading speed for all western languages,
* characters per minute */
float cpm = 1000.0f;
/* Base time for which a line should be shown, in ms */
float line_duration = (line_len * 60.0f * 1000.0f) / cpm;
/* Ticker updates (nominally) once every TICKER_PIXEL_PERIOD ms
* > Return base number of ticks for which text should scroll
* from one line to the next */
size_t scroll_ticks = (size_t)(line_duration / TICKER_PIXEL_PERIOD);
/* Note: This function is only called if num_lines > max_display_lines */
size_t excess_lines = num_lines - max_display_lines;
/* Ticker will pause for one line duration when the first
* or last line is reached */
size_t ticker_period = ((excess_lines * 2) + 2) * scroll_ticks;
size_t phase = idx % ticker_period;
size_t line_phase = 0;
bool pause = false;
bool scroll_up = true;
/* Pause on first line */
if (phase < scroll_ticks)
pause = true;
phase = (phase >= scroll_ticks) ? phase - scroll_ticks : 0;
/* Pause on last line and change direction */
if (phase >= excess_lines * scroll_ticks)
{
scroll_up = false;
if (phase < (excess_lines + 1) * scroll_ticks)
{
pause = true;
phase = 0;
}
else
phase -= (excess_lines + 1) * scroll_ticks;
}
line_phase = phase % scroll_ticks;
if (pause || (line_phase == 0))
{
/* Static display of max_display_lines
* (no animation) */
*num_display_lines = max_display_lines;
*y_offset = 0.0f;
*fade_active = false;
if (pause)
*line_offset = scroll_up ? 0 : excess_lines;
else
*line_offset = scroll_up ? (phase / scroll_ticks) : (excess_lines - (phase / scroll_ticks));
}
else
{
/* Scroll animation is active */
*num_display_lines = max_display_lines - 1;
*fade_active = fade_enabled;
if (scroll_up)
{
*line_offset = (phase / scroll_ticks) + 1;
*y_offset = (float)line_height * (float)(scroll_ticks - line_phase) / (float)scroll_ticks;
}
else
{
*line_offset = excess_lines - (phase / scroll_ticks);
*y_offset = (float)line_height * (1.0f - (float)(scroll_ticks - line_phase) / (float)scroll_ticks);
}
/* Set fade parameters if fade animation is active */
if (*fade_active)
set_line_smooth_fade_parameters(
scroll_up, scroll_ticks, line_phase, line_height,
num_lines, *num_display_lines, *line_offset, *y_offset,
top_fade_line_offset, top_fade_y_offset, top_fade_alpha,
bottom_fade_line_offset, bottom_fade_y_offset, bottom_fade_alpha);
}
/* Set 'default' fade parameters if fade animation
* is inactive */
if (!*fade_active)
set_line_smooth_fade_parameters_default(
top_fade_line_offset, top_fade_y_offset, top_fade_alpha,
bottom_fade_line_offset, bottom_fade_y_offset, bottom_fade_alpha);
}
static void gfx_animation_line_ticker_smooth_loop(uint64_t idx,
bool fade_enabled, size_t line_len, size_t line_height,
size_t max_display_lines, size_t num_lines,
size_t *num_display_lines, size_t *line_offset, float *y_offset,
bool *fade_active,
size_t *top_fade_line_offset, float *top_fade_y_offset, float *top_fade_alpha,
size_t *bottom_fade_line_offset, float *bottom_fade_y_offset, float *bottom_fade_alpha)
{
/* Mean human reading speed for all western languages,
* characters per minute */
float cpm = 1000.0f;
/* Base time for which a line should be shown, in ms */
float line_duration = (line_len * 60.0f * 1000.0f) / cpm;
/* Ticker updates (nominally) once every TICKER_PIXEL_PERIOD ms
* > Return base number of ticks for which text should scroll
* from one line to the next */
size_t scroll_ticks = (size_t)(line_duration / TICKER_PIXEL_PERIOD);
size_t ticker_period = (num_lines + 1) * scroll_ticks;
size_t phase = idx % ticker_period;
size_t line_phase = phase % scroll_ticks;
*line_offset = phase / scroll_ticks;
if (line_phase == (scroll_ticks - 1))
{
/* Static display of max_display_lines
* (no animation) */
*num_display_lines = max_display_lines;
*fade_active = false;
}
else
{
*num_display_lines = max_display_lines - 1;
*fade_active = fade_enabled;
}
*y_offset = (float)line_height * (float)(scroll_ticks - line_phase) / (float)scroll_ticks;
/* Set fade parameters */
if (*fade_active)
set_line_smooth_fade_parameters(
true, scroll_ticks, line_phase, line_height,
num_lines, *num_display_lines, *line_offset, *y_offset,
top_fade_line_offset, top_fade_y_offset, top_fade_alpha,
bottom_fade_line_offset, bottom_fade_y_offset, bottom_fade_alpha);
else
set_line_smooth_fade_parameters_default(
top_fade_line_offset, top_fade_y_offset, top_fade_alpha,
bottom_fade_line_offset, bottom_fade_y_offset, bottom_fade_alpha);
}
static void gfx_delayed_animation_cb(void *userdata)
{
gfx_delayed_animation_t *delayed_animation =
(gfx_delayed_animation_t*) userdata;
gfx_animation_push(&delayed_animation->entry);
free(delayed_animation);
}
void gfx_animation_push_delayed(
unsigned delay, gfx_animation_ctx_entry_t *entry)
{
gfx_timer_ctx_entry_t timer_entry;
gfx_delayed_animation_t *delayed_animation = (gfx_delayed_animation_t*)
malloc(sizeof(gfx_delayed_animation_t));
memcpy(&delayed_animation->entry, entry, sizeof(gfx_animation_ctx_entry_t));
timer_entry.cb = gfx_delayed_animation_cb;
timer_entry.duration = delay;
timer_entry.userdata = delayed_animation;
gfx_animation_timer_start(&delayed_animation->timer, &timer_entry);
}
bool gfx_animation_push(gfx_animation_ctx_entry_t *entry)
{
struct tween t;
gfx_animation_t *p_anim = anim_get_ptr();
t.duration = entry->duration;
t.running_since = 0;
t.initial_value = *entry->subject;
t.target_value = entry->target_value;
t.subject = entry->subject;
t.tag = entry->tag;
t.cb = entry->cb;
t.userdata = entry->userdata;
t.easing = NULL;
t.deleted = false;
switch (entry->easing_enum)
{
case EASING_LINEAR:
t.easing = &easing_linear;
break;
/* Quad */
case EASING_IN_QUAD:
t.easing = &easing_in_quad;
break;
case EASING_OUT_QUAD:
t.easing = &easing_out_quad;
break;
case EASING_IN_OUT_QUAD:
t.easing = &easing_in_out_quad;
break;
case EASING_OUT_IN_QUAD:
t.easing = &easing_out_in_quad;
break;
/* Cubic */
case EASING_IN_CUBIC:
t.easing = &easing_in_cubic;
break;
case EASING_OUT_CUBIC:
t.easing = &easing_out_cubic;
break;
case EASING_IN_OUT_CUBIC:
t.easing = &easing_in_out_cubic;
break;
case EASING_OUT_IN_CUBIC:
t.easing = &easing_out_in_cubic;
break;
/* Quart */
case EASING_IN_QUART:
t.easing = &easing_in_quart;
break;
case EASING_OUT_QUART:
t.easing = &easing_out_quart;
break;
case EASING_IN_OUT_QUART:
t.easing = &easing_in_out_quart;
break;
case EASING_OUT_IN_QUART:
t.easing = &easing_out_in_quart;
break;
/* Quint */
case EASING_IN_QUINT:
t.easing = &easing_in_quint;
break;
case EASING_OUT_QUINT:
t.easing = &easing_out_quint;
break;
case EASING_IN_OUT_QUINT:
t.easing = &easing_in_out_quint;
break;
case EASING_OUT_IN_QUINT:
t.easing = &easing_out_in_quint;
break;
/* Sine */
case EASING_IN_SINE:
t.easing = &easing_in_sine;
break;
case EASING_OUT_SINE:
t.easing = &easing_out_sine;
break;
case EASING_IN_OUT_SINE:
t.easing = &easing_in_out_sine;
break;
case EASING_OUT_IN_SINE:
t.easing = &easing_out_in_sine;
break;
/* Expo */
case EASING_IN_EXPO:
t.easing = &easing_in_expo;
break;
case EASING_OUT_EXPO:
t.easing = &easing_out_expo;
break;
case EASING_IN_OUT_EXPO:
t.easing = &easing_in_out_expo;
break;
case EASING_OUT_IN_EXPO:
t.easing = &easing_out_in_expo;
break;
/* Circ */
case EASING_IN_CIRC:
t.easing = &easing_in_circ;
break;
case EASING_OUT_CIRC:
t.easing = &easing_out_circ;
break;
case EASING_IN_OUT_CIRC:
t.easing = &easing_in_out_circ;
break;
case EASING_OUT_IN_CIRC:
t.easing = &easing_out_in_circ;
break;
/* Bounce */
case EASING_IN_BOUNCE:
t.easing = &easing_in_bounce;
break;
case EASING_OUT_BOUNCE:
t.easing = &easing_out_bounce;
break;
case EASING_IN_OUT_BOUNCE:
t.easing = &easing_in_out_bounce;
break;
case EASING_OUT_IN_BOUNCE:
t.easing = &easing_out_in_bounce;
break;
default:
break;
}
/* ignore born dead tweens */
if (!t.easing || t.duration == 0 || t.initial_value == t.target_value)
return false;
if (p_anim->in_update)
RBUF_PUSH(p_anim->pending, t);
else
RBUF_PUSH(p_anim->list, t);
return true;
}
bool gfx_animation_update(
gfx_animation_t *p_anim,
retro_time_t current_time,
bool timedate_enable,
float _ticker_speed,
unsigned video_width,
unsigned video_height)
{
unsigned i;
const bool ticker_is_active = p_anim->ticker_is_active;
static retro_time_t last_clock_update = 0;
static retro_time_t last_ticker_update = 0;
static retro_time_t last_ticker_slow_update = 0;
/* Horizontal smooth ticker parameters */
static float ticker_pixel_accumulator = 0.0f;
unsigned ticker_pixel_accumulator_uint = 0;
float ticker_pixel_increment = 0.0f;
/* Vertical (line) smooth ticker parameters */
static float ticker_pixel_line_accumulator = 0.0f;
unsigned ticker_pixel_line_accumulator_uint = 0;
float ticker_pixel_line_increment = 0.0f;
/* Adjust ticker speed */
float speed_factor =
(_ticker_speed > 0.0001f) ? _ticker_speed : 1.0f;
unsigned ticker_speed =
(unsigned)(((float)TICKER_SPEED / speed_factor) + 0.5);
unsigned ticker_slow_speed =
(unsigned)(((float)TICKER_SLOW_SPEED / speed_factor) + 0.5);
/* Note: cur_time & old_time are in us (microseconds),
* delta_time is in ms */
p_anim->cur_time = current_time;
p_anim->delta_time = (p_anim->old_time == 0)
? 0.0f
: (float)(p_anim->cur_time - p_anim->old_time) / 1000.0f;
p_anim->old_time = p_anim->cur_time;
if (((p_anim->cur_time - last_clock_update) > 1000000) /* 1000000 us == 1 second */
&& timedate_enable)
{
p_anim->animation_is_active = true;
last_clock_update = p_anim->cur_time;
}
if (ticker_is_active)
{
/* Update non-smooth ticker indices */
if (p_anim->cur_time - last_ticker_update >= ticker_speed)
{
p_anim->ticker_idx++;
last_ticker_update = p_anim->cur_time;
}
if (p_anim->cur_time - last_ticker_slow_update >= ticker_slow_speed)
{
p_anim->ticker_slow_idx++;
last_ticker_slow_update = p_anim->cur_time;
}
/* Pixel tickers (horizontal + vertical/line) update
* every frame (regardless of time delta), so require
* special handling */
/* > Get base increment size (+1 every TICKER_PIXEL_PERIOD ms) */
ticker_pixel_increment = p_anim->delta_time / TICKER_PIXEL_PERIOD;
/* > Apply ticker speed adjustment */
ticker_pixel_increment *= speed_factor;
/* At this point we diverge:
* > Vertical (line) ticker is based upon text
* characteristics (number of characters per
* line) - it is therefore independent of display
* size/scaling, so speed-adjusted pixel increment
* is used directly */
ticker_pixel_line_increment = ticker_pixel_increment;
/* > Horizontal ticker is based upon physical line
* width - it is therefore very much dependent upon
* display size/scaling. Each menu driver is free
* to handle video scaling as it pleases - a callback
* function set by the menu driver is thus used to
* perform menu-specific scaling adjustments */
if (p_anim->updatetime_cb)
p_anim->updatetime_cb(&ticker_pixel_increment,
video_width, video_height);
/* > Update accumulators */
ticker_pixel_accumulator += ticker_pixel_increment;
ticker_pixel_accumulator_uint = (unsigned)ticker_pixel_accumulator;
ticker_pixel_line_accumulator += ticker_pixel_line_increment;
ticker_pixel_line_accumulator_uint = (unsigned)ticker_pixel_line_accumulator;
/* > Check whether we've accumulated enough
* for an idx update */
if (ticker_pixel_accumulator_uint > 0)
{
p_anim->ticker_pixel_idx += ticker_pixel_accumulator_uint;
ticker_pixel_accumulator -= (float)ticker_pixel_accumulator_uint;
}
if (ticker_pixel_accumulator_uint > 0)
{
p_anim->ticker_pixel_line_idx += ticker_pixel_line_accumulator_uint;
ticker_pixel_line_accumulator -= (float)ticker_pixel_line_accumulator_uint;
}
}
p_anim->in_update = true;
p_anim->pending_deletes = false;
for (i = 0; i < RBUF_LEN(p_anim->list); i++)
{
struct tween *tween = &p_anim->list[i];
if (tween->deleted)
continue;
tween->running_since += p_anim->delta_time;
*tween->subject = tween->easing(
tween->running_since,
tween->initial_value,
tween->target_value - tween->initial_value,
tween->duration);
if (tween->running_since >= tween->duration)
{
*tween->subject = tween->target_value;
if (tween->cb)
tween->cb(tween->userdata);
RBUF_REMOVE(p_anim->list, i);
i--;
}
}
if (p_anim->pending_deletes)
{
for (i = 0; i < RBUF_LEN(p_anim->list); i++)
{
struct tween *tween = &p_anim->list[i];
if (tween->deleted)
{
RBUF_REMOVE(p_anim->list, i);
i--;
}
}
p_anim->pending_deletes = false;
}
if (RBUF_LEN(p_anim->pending) > 0)
{
size_t list_len = RBUF_LEN(p_anim->list);
size_t pending_len = RBUF_LEN(p_anim->pending);
RBUF_RESIZE(p_anim->list, list_len + pending_len);
memcpy(p_anim->list + list_len, p_anim->pending,
sizeof(*p_anim->pending) * pending_len);
RBUF_CLEAR(p_anim->pending);
}
p_anim->in_update = false;
p_anim->animation_is_active = RBUF_LEN(p_anim->list) > 0;
return p_anim->animation_is_active;
}
static void build_ticker_loop_string(
const char* src_str, const char *spacer,
unsigned char_offset1, unsigned num_chars1,
unsigned char_offset2, unsigned num_chars2,
unsigned char_offset3, unsigned num_chars3,
char *dest_str, size_t dest_str_len)
{
char tmp[PATH_MAX_LENGTH];
tmp[0] = '\0';
dest_str[0] = '\0';
/* Copy 'trailing' chunk of source string, if required */
if (num_chars1 > 0)
utf8cpy(
dest_str, dest_str_len,
utf8skip(src_str, char_offset1), num_chars1);
/* Copy chunk of spacer string, if required */
if (num_chars2 > 0)
{
utf8cpy(
tmp, sizeof(tmp),
utf8skip(spacer, char_offset2), num_chars2);
strlcat(dest_str, tmp, dest_str_len);
}
/* Copy 'leading' chunk of source string, if required */
if (num_chars3 > 0)
{
utf8cpy(
tmp, sizeof(tmp),
utf8skip(src_str, char_offset3), num_chars3);
strlcat(dest_str, tmp, dest_str_len);
}
}
static void build_line_ticker_string(
size_t num_display_lines, size_t line_offset,
struct string_list *lines,
char *dest_str, size_t dest_str_len)
{
size_t i;
for (i = 0; i < num_display_lines; i++)
{
size_t offset = i + line_offset;
size_t line_index = offset % (lines->size + 1);
bool line_valid = true;
if (line_index >= lines->size)
line_valid = false;
if (line_valid)
strlcat(dest_str, lines->elems[line_index].data, dest_str_len);
if (i < num_display_lines - 1)
strlcat(dest_str, "\n", dest_str_len);
}
}
bool gfx_animation_ticker(gfx_animation_ctx_ticker_t *ticker)
{
gfx_animation_t *p_anim = anim_get_ptr();
size_t str_len = utf8len(ticker->str);
if (!ticker->spacer)
ticker->spacer = TICKER_SPACER_DEFAULT;
if ((size_t)str_len <= ticker->len)
{
utf8cpy(ticker->s,
PATH_MAX_LENGTH,
ticker->str,
ticker->len);
return false;
}
if (!ticker->selected)
{
utf8cpy(ticker->s,
PATH_MAX_LENGTH, ticker->str, ticker->len - 3);
strlcat(ticker->s, "...", ticker->len);
return false;
}
/* Note: If we reach this point then str_len > ticker->len
* (previously had an unecessary 'if (str_len > ticker->len)'
* check here...) */
switch (ticker->type_enum)
{
case TICKER_TYPE_LOOP:
{
size_t offset1, offset2, offset3;
size_t width1, width2, width3;
gfx_animation_ticker_loop(
ticker->idx,
ticker->len,
str_len, utf8len(ticker->spacer),
&offset1, &width1,
&offset2, &width2,
&offset3, &width3);
build_ticker_loop_string(
ticker->str, ticker->spacer,
offset1, width1,
offset2, width2,
offset3, width3,
ticker->s, PATH_MAX_LENGTH);
}
break;
case TICKER_TYPE_BOUNCE:
default:
{
size_t offset = gfx_animation_ticker_generic(
ticker->idx,
ticker->len,
&str_len);
utf8cpy(
ticker->s,
PATH_MAX_LENGTH,
utf8skip(ticker->str, offset),
str_len);
}
break;
}
p_anim->ticker_is_active = true;
return true;
}
/* 'Fixed width' font version of gfx_animation_ticker_smooth() */
static bool gfx_animation_ticker_smooth_fw(
gfx_animation_t *p_anim,
gfx_animation_ctx_ticker_smooth_t *ticker)
{
size_t spacer_len = 0;
unsigned glyph_width = ticker->glyph_width;
unsigned src_str_width = 0;
unsigned spacer_width = 0;
bool success = false;
bool is_active = false;
/* Sanity check has already been performed by
* gfx_animation_ticker_smooth() - no need to
* repeat */
/* Get length + width of src string */
size_t src_str_len = utf8len(ticker->src_str);
if (src_str_len < 1)
goto end;
src_str_width = src_str_len * glyph_width;
/* If src string width is <= text field width, we
* can just copy the entire string */
if (src_str_width <= ticker->field_width)
{
utf8cpy(ticker->dst_str, ticker->dst_str_len,
ticker->src_str, src_str_len);
if (ticker->dst_str_width)
*ticker->dst_str_width = src_str_width;
*ticker->x_offset = 0;
success = true;
goto end;
}
/* If entry is not selected, just clip input string
* and add '...' suffix */
if (!ticker->selected)
{
unsigned num_chars = 0;
unsigned suffix_len = 3;
unsigned suffix_width = suffix_len * glyph_width;
/* Sanity check */
if (ticker->field_width < suffix_width)
goto end;
/* Determine number of characters to copy */
num_chars = (ticker->field_width - suffix_width) / glyph_width;
/* Copy string segment + add suffix */
utf8cpy(ticker->dst_str, ticker->dst_str_len, ticker->src_str, num_chars);
strlcat(ticker->dst_str, "...", ticker->dst_str_len);
if (ticker->dst_str_width)
*ticker->dst_str_width = (num_chars * glyph_width) + suffix_width;
*ticker->x_offset = 0;
success = true;
goto end;
}
/* If we get this far, then a scrolling animation
* is required... */
/* Use default spacer, if none is provided */
if (!ticker->spacer)
ticker->spacer = TICKER_SPACER_DEFAULT;
/* Get length + width of spacer */
spacer_len = utf8len(ticker->spacer);
if (spacer_len < 1)
goto end;
spacer_width = spacer_len * glyph_width;
/* Determine animation type */
switch (ticker->type_enum)
{
case TICKER_TYPE_LOOP:
{
unsigned char_offset1 = 0;
unsigned num_chars1 = 0;
unsigned char_offset2 = 0;
unsigned num_chars2 = 0;
unsigned char_offset3 = 0;
unsigned num_chars3 = 0;
gfx_animation_ticker_smooth_loop_fw(
ticker->idx,
src_str_width, src_str_len, spacer_width, spacer_len,
glyph_width, ticker->field_width,
&char_offset1, &num_chars1,
&char_offset2, &num_chars2,
&char_offset3, &num_chars3,
ticker->x_offset);
build_ticker_loop_string(
ticker->src_str, ticker->spacer,
char_offset1, num_chars1,
char_offset2, num_chars2,
char_offset3, num_chars3,
ticker->dst_str, ticker->dst_str_len);
if (ticker->dst_str_width)
*ticker->dst_str_width = (num_chars1 + num_chars2 + num_chars3) * glyph_width;
break;
}
case TICKER_TYPE_BOUNCE:
default:
{
unsigned char_offset = 0;
unsigned num_chars = 0;
ticker->dst_str[0] = '\0';
gfx_animation_ticker_smooth_generic_fw(
ticker->idx,
src_str_width, src_str_len, glyph_width, ticker->field_width,
&char_offset, &num_chars, ticker->x_offset);
/* Copy required substring */
if (num_chars > 0)
utf8cpy(
ticker->dst_str, ticker->dst_str_len,
utf8skip(ticker->src_str, char_offset), num_chars);
if (ticker->dst_str_width)
*ticker->dst_str_width = num_chars * glyph_width;
break;
}
}
success = true;
is_active = true;
p_anim->ticker_is_active = true;
end:
if (!success)
{
*ticker->x_offset = 0;
if (ticker->dst_str_len > 0)
ticker->dst_str[0] = '\0';
}
return is_active;
}
bool gfx_animation_ticker_smooth(gfx_animation_ctx_ticker_smooth_t *ticker)
{
size_t i;
size_t src_str_len = 0;
size_t spacer_len = 0;
unsigned small_src_char_widths[64] = {0};
unsigned src_str_width = 0;
unsigned spacer_width = 0;
unsigned *src_char_widths = NULL;
unsigned *spacer_char_widths = NULL;
const char *str_ptr = NULL;
bool success = false;
bool is_active = false;
gfx_animation_t *p_anim = anim_get_ptr();
/* Sanity check */
if (string_is_empty(ticker->src_str) ||
(ticker->dst_str_len < 1) ||
(ticker->field_width < 1) ||
(!ticker->font && (ticker->glyph_width < 1)))
goto end;
/* If we are using a fixed width font (ticker->font == NULL),
* switch to optimised code path */
if (!ticker->font)
return gfx_animation_ticker_smooth_fw(p_anim, ticker);
/* Find the display width of each character in
* the src string + total width */
src_str_len = utf8len(ticker->src_str);
if (src_str_len < 1)
goto end;
src_char_widths = small_src_char_widths;
if (src_str_len > ARRAY_SIZE(small_src_char_widths))
{
src_char_widths = (unsigned*)calloc(src_str_len, sizeof(unsigned));
if (!src_char_widths)
goto end;
}
str_ptr = ticker->src_str;
for (i = 0; i < src_str_len; i++)
{
int glyph_width = font_driver_get_message_width(
ticker->font, str_ptr, 1, ticker->font_scale);
if (glyph_width < 0)
goto end;
src_char_widths[i] = (unsigned)glyph_width;
src_str_width += (unsigned)glyph_width;
str_ptr = utf8skip(str_ptr, 1);
}
/* If total src string width is <= text field width, we
* can just copy the entire string */
if (src_str_width <= ticker->field_width)
{
utf8cpy(ticker->dst_str, ticker->dst_str_len,
ticker->src_str, src_str_len);
if (ticker->dst_str_width)
*ticker->dst_str_width = src_str_width;
*ticker->x_offset = 0;
success = true;
goto end;
}
/* If entry is not selected, just clip input string
* and add '...' suffix */
if (!ticker->selected)
{
unsigned text_width;
unsigned current_width = 0;
unsigned num_chars = 0;
int period_width =
font_driver_get_message_width(ticker->font,
".", 1, ticker->font_scale);
/* Sanity check */
if (period_width < 0)
goto end;
if (ticker->field_width < (3 * (unsigned)period_width))
goto end;
/* Determine number of characters to copy */
text_width = ticker->field_width - (3 * period_width);
for (;;)
{
current_width += src_char_widths[num_chars];
if (current_width > text_width)
{
/* Have to go back one in order to get 'actual'
* value for dst_str_width */
current_width -= src_char_widths[num_chars];
break;
}
num_chars++;
}
/* Copy string segment + add suffix */
utf8cpy(ticker->dst_str, ticker->dst_str_len,
ticker->src_str, num_chars);
strlcat(ticker->dst_str, "...", ticker->dst_str_len);
if (ticker->dst_str_width)
*ticker->dst_str_width = current_width + (3 * period_width);
*ticker->x_offset = 0;
success = true;
goto end;
}
/* If we get this far, then a scrolling animation
* is required... */
/* Use default spacer, if none is provided */
if (!ticker->spacer)
ticker->spacer = TICKER_SPACER_DEFAULT;
/* Find the display width of each character in
* the spacer */
spacer_len = utf8len(ticker->spacer);
if (spacer_len < 1)
goto end;
spacer_char_widths = (unsigned*)calloc(spacer_len, sizeof(unsigned));
if (!spacer_char_widths)
goto end;
str_ptr = ticker->spacer;
for (i = 0; i < spacer_len; i++)
{
int glyph_width = font_driver_get_message_width(
ticker->font, str_ptr, 1, ticker->font_scale);
if (glyph_width < 0)
goto end;
spacer_char_widths[i] = (unsigned)glyph_width;
spacer_width += (unsigned)glyph_width;
str_ptr = utf8skip(str_ptr, 1);
}
/* Determine animation type */
switch (ticker->type_enum)
{
case TICKER_TYPE_LOOP:
{
unsigned char_offset1 = 0;
unsigned num_chars1 = 0;
unsigned char_offset2 = 0;
unsigned num_chars2 = 0;
unsigned char_offset3 = 0;
unsigned num_chars3 = 0;
gfx_animation_ticker_smooth_loop(
ticker->idx,
src_char_widths, src_str_len,
spacer_char_widths, spacer_len,
src_str_width, spacer_width, ticker->field_width,
&char_offset1, &num_chars1,
&char_offset2, &num_chars2,
&char_offset3, &num_chars3,
ticker->x_offset, ticker->dst_str_width);
build_ticker_loop_string(
ticker->src_str, ticker->spacer,
char_offset1, num_chars1,
char_offset2, num_chars2,
char_offset3, num_chars3,
ticker->dst_str, ticker->dst_str_len);
break;
}
case TICKER_TYPE_BOUNCE:
default:
{
unsigned char_offset = 0;
unsigned num_chars = 0;
ticker->dst_str[0] = '\0';
gfx_animation_ticker_smooth_generic(
ticker->idx,
src_char_widths, src_str_len,
src_str_width, ticker->field_width,
&char_offset, &num_chars,
ticker->x_offset, ticker->dst_str_width);
/* Copy required substring */
if (num_chars > 0)
utf8cpy(
ticker->dst_str, ticker->dst_str_len,
utf8skip(ticker->src_str, char_offset), num_chars);
break;
}
}
success = true;
is_active = true;
p_anim->ticker_is_active = true;
end:
if (src_char_widths != small_src_char_widths && src_char_widths)
{
free(src_char_widths);
src_char_widths = NULL;
}
if (spacer_char_widths)
{
free(spacer_char_widths);
spacer_char_widths = NULL;
}
if (!success)
{
*ticker->x_offset = 0;
if (ticker->dst_str_len > 0)
ticker->dst_str[0] = '\0';
}
return is_active;
}
bool gfx_animation_line_ticker(gfx_animation_ctx_line_ticker_t *line_ticker)
{
char *wrapped_str = NULL;
struct string_list lines = {0};
size_t line_offset = 0;
bool success = false;
bool is_active = false;
gfx_animation_t *p_anim = anim_get_ptr();
/* Sanity check */
if (!line_ticker)
return false;
if (string_is_empty(line_ticker->str) ||
(line_ticker->line_len < 1) ||
(line_ticker->max_lines < 1))
goto end;
/* Line wrap input string */
wrapped_str = (char*)malloc((strlen(line_ticker->str) + 1) * sizeof(char));
if (!wrapped_str)
goto end;
word_wrap(
wrapped_str,
line_ticker->str,
(int)line_ticker->line_len,
true, 0);
if (string_is_empty(wrapped_str))
goto end;
/* Split into component lines */
string_list_initialize(&lines);
if (!string_split_noalloc(&lines, wrapped_str, "\n"))
goto end;
/* Check whether total number of lines fits within
* the set limit */
if (lines.size <= line_ticker->max_lines)
{
strlcpy(line_ticker->s, wrapped_str, line_ticker->len);
success = true;
goto end;
}
/* Determine offset of first line in wrapped string */
switch (line_ticker->type_enum)
{
case TICKER_TYPE_LOOP:
/* In this case, line_offset is simply equal to the phase */
line_offset = gfx_animation_line_ticker_loop(
line_ticker->idx,
line_ticker->line_len,
lines.size,
&line_offset);
break;
case TICKER_TYPE_BOUNCE:
default:
gfx_animation_line_ticker_generic(
line_ticker->idx,
line_ticker->line_len,
line_ticker->max_lines,
lines.size,
&line_offset);
break;
}
/* Build output string from required lines */
build_line_ticker_string(
line_ticker->max_lines, line_offset, &lines,
line_ticker->s, line_ticker->len);
success = true;
is_active = true;
p_anim->ticker_is_active = true;
end:
if (wrapped_str)
{
free(wrapped_str);
wrapped_str = NULL;
}
string_list_deinitialize(&lines);
if (!success)
if (line_ticker->len > 0)
line_ticker->s[0] = '\0';
return is_active;
}
bool gfx_animation_line_ticker_smooth(gfx_animation_ctx_line_ticker_smooth_t *line_ticker)
{
char *wrapped_str = NULL;
struct string_list lines = {0};
int glyph_width = 0;
int glyph_height = 0;
size_t line_len = 0;
size_t max_display_lines = 0;
size_t num_display_lines = 0;
size_t line_offset = 0;
size_t top_fade_line_offset = 0;
size_t bottom_fade_line_offset = 0;
bool fade_active = false;
bool success = false;
bool is_active = false;
gfx_animation_t *p_anim = anim_get_ptr();
/* Sanity check */
if (!line_ticker)
return false;
if (!line_ticker->font ||
string_is_empty(line_ticker->src_str) ||
(line_ticker->field_width < 1) ||
(line_ticker->field_height < 1))
goto end;
/* Get font dimensions */
/* > Width
* This is a bit of a fudge. Performing a 'font aware'
* (i.e. character display width) word wrap is too CPU
* intensive, so we just sample the width of a common
* character and hope for the best. (We choose 'a' because
* this is what Ozone uses for spacing calculations, and
* it is proven to work quite well) */
glyph_width = font_driver_get_message_width(
line_ticker->font, "a", 1, line_ticker->font_scale);
if (glyph_width <= 0)
goto end;
/* > Height */
glyph_height = font_driver_get_line_height(
line_ticker->font, line_ticker->font_scale);
if (glyph_height <= 0)
goto end;
/* Determine line wrap parameters */
line_len = (size_t)(line_ticker->field_width / glyph_width);
max_display_lines = (size_t)(line_ticker->field_height / glyph_height);
if ((line_len < 1) || (max_display_lines < 1))
goto end;
/* Line wrap input string */
wrapped_str = (char*)malloc((strlen(line_ticker->src_str) + 1) * sizeof(char));
if (!wrapped_str)
goto end;
word_wrap(
wrapped_str,
line_ticker->src_str,
(int)line_len,
true, 0);
if (string_is_empty(wrapped_str))
goto end;
string_list_initialize(&lines);
/* Split into component lines */
if (!string_split_noalloc(&lines, wrapped_str, "\n"))
goto end;
/* Check whether total number of lines fits within
* the set field limit */
if (lines.size <= max_display_lines)
{
strlcpy(line_ticker->dst_str, wrapped_str, line_ticker->dst_str_len);
*line_ticker->y_offset = 0.0f;
/* No fade animation is required */
if (line_ticker->fade_enabled)
{
if (line_ticker->top_fade_str_len > 0)
line_ticker->top_fade_str[0] = '\0';
if (line_ticker->bottom_fade_str_len > 0)
line_ticker->bottom_fade_str[0] = '\0';
*line_ticker->top_fade_y_offset = 0.0f;
*line_ticker->bottom_fade_y_offset = 0.0f;
*line_ticker->top_fade_alpha = 0.0f;
*line_ticker->bottom_fade_alpha = 0.0f;
}
success = true;
goto end;
}
/* Determine which lines should be shown, along with
* y axis draw offset */
switch (line_ticker->type_enum)
{
case TICKER_TYPE_LOOP:
gfx_animation_line_ticker_smooth_loop(
line_ticker->idx,
line_ticker->fade_enabled,
line_len, (size_t)glyph_height,
max_display_lines, lines.size,
&num_display_lines, &line_offset, line_ticker->y_offset,
&fade_active,
&top_fade_line_offset, line_ticker->top_fade_y_offset, line_ticker->top_fade_alpha,
&bottom_fade_line_offset, line_ticker->bottom_fade_y_offset, line_ticker->bottom_fade_alpha);
break;
case TICKER_TYPE_BOUNCE:
default:
gfx_animation_line_ticker_smooth_generic(
line_ticker->idx,
line_ticker->fade_enabled,
line_len, (size_t)glyph_height,
max_display_lines, lines.size,
&num_display_lines, &line_offset, line_ticker->y_offset,
&fade_active,
&top_fade_line_offset, line_ticker->top_fade_y_offset, line_ticker->top_fade_alpha,
&bottom_fade_line_offset, line_ticker->bottom_fade_y_offset, line_ticker->bottom_fade_alpha);
break;
}
/* Build output string from required lines */
build_line_ticker_string(
num_display_lines, line_offset, &lines,
line_ticker->dst_str, line_ticker->dst_str_len);
/* Extract top/bottom fade strings, if required */
if (fade_active)
{
/* We waste a handful of clock cycles by using
* build_line_ticker_string() here, but it saves
* rewriting a heap of code... */
build_line_ticker_string(
1, top_fade_line_offset, &lines,
line_ticker->top_fade_str, line_ticker->top_fade_str_len);
build_line_ticker_string(
1, bottom_fade_line_offset, &lines,
line_ticker->bottom_fade_str, line_ticker->bottom_fade_str_len);
}
success = true;
is_active = true;
p_anim->ticker_is_active = true;
end:
if (wrapped_str)
{
free(wrapped_str);
wrapped_str = NULL;
}
string_list_deinitialize(&lines);
if (!success)
{
if (line_ticker->dst_str_len > 0)
line_ticker->dst_str[0] = '\0';
if (line_ticker->fade_enabled)
{
if (line_ticker->top_fade_str_len > 0)
line_ticker->top_fade_str[0] = '\0';
if (line_ticker->bottom_fade_str_len > 0)
line_ticker->bottom_fade_str[0] = '\0';
*line_ticker->top_fade_alpha = 0.0f;
*line_ticker->bottom_fade_alpha = 0.0f;
}
}
return is_active;
}
bool gfx_animation_kill_by_tag(uintptr_t *tag)
{
unsigned i;
gfx_animation_t *p_anim = anim_get_ptr();
if (!tag || *tag == (uintptr_t)-1)
return false;
/* Scan animation list */
for (i = 0; i < RBUF_LEN(p_anim->list); ++i)
{
struct tween *t = &p_anim->list[i];
if (t->tag != *tag)
continue;
/* If we are currently inside gfx_animation_update(),
* we are already looping over p_anim->list entries
* > Cannot modify p_anim->list now, so schedule a
* delete for when the gfx_animation_update() loop
* is complete */
if (p_anim->in_update)
{
t->deleted = true;
p_anim->pending_deletes = true;
}
else
{
RBUF_REMOVE(p_anim->list, i);
--i;
}
}
/* If we are currently inside gfx_animation_update(),
* also have to scan *pending* animation list
* (otherwise any entries that are simultaneously added
* and deleted inside gfx_animation_update() won't get
* deleted at all, producing utter chaos) */
if (p_anim->in_update)
{
for (i = 0; i < RBUF_LEN(p_anim->pending); ++i)
{
struct tween *t = &p_anim->pending[i];
if (t->tag != *tag)
continue;
RBUF_REMOVE(p_anim->pending, i);
--i;
}
}
return true;
}
void gfx_animation_deinit(gfx_animation_t *p_anim)
{
if (!p_anim)
return;
RBUF_FREE(p_anim->list);
RBUF_FREE(p_anim->pending);
if (p_anim->updatetime_cb)
p_anim->updatetime_cb = NULL;
memset(p_anim, 0, sizeof(*p_anim));
}
void gfx_animation_timer_start(gfx_timer_t *timer, gfx_timer_ctx_entry_t *timer_entry)
{
gfx_animation_ctx_entry_t entry;
uintptr_t tag = (uintptr_t) timer;
gfx_animation_kill_by_tag(&tag);
*timer = 0.0f;
entry.easing_enum = EASING_LINEAR;
entry.tag = tag;
entry.duration = timer_entry->duration;
entry.target_value = 1.0f;
entry.subject = timer;
entry.cb = timer_entry->cb;
entry.userdata = timer_entry->userdata;
gfx_animation_push(&entry);
}
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