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RetroArch/gfx/widgets/gfx_widget_generic_message.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2014-2017 - Jean-André Santoni
* Copyright (C) 2015-2018 - Andre Leiradella
* Copyright (C) 2018-2020 - natinusala
*
* 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 "../gfx_widgets.h"
#include "../gfx_animation.h"
#include "../gfx_display.h"
#include "../../retroarch.h"
#define GENERIC_MESSAGE_FADE_DURATION MSG_QUEUE_ANIMATION_DURATION
/* Widget state */
enum gfx_widget_generic_message_status
{
GFX_WIDGET_GENERIC_MESSAGE_IDLE = 0,
GFX_WIDGET_GENERIC_MESSAGE_SLIDE_IN,
GFX_WIDGET_GENERIC_MESSAGE_FADE_IN,
GFX_WIDGET_GENERIC_MESSAGE_WAIT,
GFX_WIDGET_GENERIC_MESSAGE_FADE_OUT
};
struct gfx_widget_generic_message_state
{
unsigned bg_min_width;
unsigned bg_width;
unsigned bg_height;
unsigned frame_width;
unsigned text_padding;
unsigned text_color;
unsigned message_duration;
gfx_timer_t timer; /* float alignment */
float bg_x;
float bg_y_start;
float bg_y_end;
float text_x;
float text_y_start;
float text_y_end;
float alpha;
float bg_color[16];
float frame_color[16];
enum gfx_widget_generic_message_status status;
char message[512];
bool message_updated;
};
typedef struct gfx_widget_generic_message_state gfx_widget_generic_message_state_t;
static gfx_widget_generic_message_state_t p_w_generic_message_st = {
0, /* bg_min_width */
0, /* bg_width */
0, /* bg_height */
0, /* frame_width */
0, /* text_padding */
0xFFFFFFFF, /* text_color */
0, /* message_duration */
0.0f, /* timer */
0.0f, /* bg_x */
0.0f, /* bg_y_start */
0.0f, /* bg_y_end */
0.0f, /* text_x */
0.0f, /* text_y_start */
0.0f, /* text_y_end */
0.0f, /* alpha */
COLOR_HEX_TO_FLOAT(0x3A3A3A, 1.0f), /* bg_color */
COLOR_HEX_TO_FLOAT(0x7A7A7A, 1.0f), /* frame_color */
GFX_WIDGET_GENERIC_MESSAGE_IDLE, /* status */
{'\0'}, /* message */
false /* message_updated */
};
/* Utilities */
static void gfx_widget_generic_message_reset(bool cancel_pending)
{
gfx_widget_generic_message_state_t *state = &p_w_generic_message_st;
uintptr_t alpha_tag = (uintptr_t)&state->alpha;
uintptr_t timer_tag = (uintptr_t)&state->timer;
/* Kill any existing timers/animations */
gfx_animation_kill_by_tag(&timer_tag);
gfx_animation_kill_by_tag(&alpha_tag);
/* Reset status */
state->status = GFX_WIDGET_GENERIC_MESSAGE_IDLE;
if (cancel_pending)
state->message_updated = false;
}
/* Callbacks */
static void gfx_widget_generic_message_fade_out_cb(void *userdata)
{
gfx_widget_generic_message_reset(false);
}
static void gfx_widget_generic_message_wait_cb(void *userdata)
{
gfx_widget_generic_message_state_t *state = (gfx_widget_generic_message_state_t*)userdata;
uintptr_t alpha_tag = (uintptr_t)&state->alpha;
gfx_animation_ctx_entry_t animation_entry;
/* Trigger fade out */
state->alpha = 1.0f;
animation_entry.easing_enum = EASING_OUT_QUAD;
animation_entry.tag = alpha_tag;
animation_entry.duration = GENERIC_MESSAGE_FADE_DURATION;
animation_entry.target_value = 0.0f;
animation_entry.subject = &state->alpha;
animation_entry.cb = gfx_widget_generic_message_fade_out_cb;
animation_entry.userdata = NULL;
gfx_animation_push(&animation_entry);
state->status = GFX_WIDGET_GENERIC_MESSAGE_FADE_OUT;
}
static void gfx_widget_generic_message_slide_in_cb(void *userdata)
{
gfx_widget_generic_message_state_t *state = (gfx_widget_generic_message_state_t*)userdata;
gfx_timer_ctx_entry_t timer;
/* Start wait timer */
state->alpha = 1.0f;
timer.duration = state->message_duration;
timer.cb = gfx_widget_generic_message_wait_cb;
timer.userdata = state;
gfx_animation_timer_start(&state->timer, &timer);
state->status = GFX_WIDGET_GENERIC_MESSAGE_WAIT;
}
/* Widget interface */
void gfx_widget_set_generic_message(void *data,
const char *msg, unsigned duration)
{
dispgfx_widget_t *p_dispwidget = (dispgfx_widget_t*)data;
gfx_widget_generic_message_state_t *state = &p_w_generic_message_st;
unsigned last_video_width = p_dispwidget->last_video_width;
int text_width = 0;
gfx_widget_font_data_t *font_msg_queue = &p_dispwidget->gfx_widget_fonts.msg_queue;
/* Ensure we have a valid message string */
if (string_is_empty(msg))
return;
/* Cache message parameters */
strlcpy(state->message, msg, sizeof(state->message));
state->message_duration = duration;
/* Get background width */
text_width = font_driver_get_message_width(
font_msg_queue->font, state->message,
(unsigned)strlen(state->message), 1.0f);
if (text_width < 0)
text_width = 0;
state->bg_width = (state->text_padding * 2) + (unsigned)text_width;
if (state->bg_width < state->bg_min_width)
state->bg_width = state->bg_min_width;
if (state->bg_width > last_video_width)
state->bg_width = last_video_width;
/* Update x draw positions */
state->bg_x = ((float)last_video_width
- (float)state->bg_width) * 0.5f;
state->text_x = ((float)last_video_width
- (float)text_width) * 0.5f;
if (state->text_x < (float)state->text_padding)
state->text_x = (float)state->text_padding;
/* If a 'slide in' animation is already in
* progress, no further action is required;
* just let animation continue with the updated
* message text */
if (state->status == GFX_WIDGET_GENERIC_MESSAGE_SLIDE_IN)
return;
/* Signal that message has been updated
* > Note that we have to defer the triggering
* of any animation changes until the next
* call of gfx_widget_generic_message_iterate().
* This is because cores will often send messages
* during initialisation - i.e. during processes
* that take a non-trivial amount of time. In these
* cases, updating the animation state here would
* result in the following:
* - Core starts initialisation/load content
* - Message is set, animation is triggered
* - Core finishes initialisation/load content,
* taking multiple 100's of ms
* - On next runloop iterate, animation status
* is checked - but because initialisation
* took so long, the animation duration has
* already elapsed
* - Animation 'finishes' immediately, and the
* user never sees it... */
state->message_updated = true;
}
/* Widget layout() */
static void gfx_widget_generic_message_layout(
void *data,
bool is_threaded, const char *dir_assets, char *font_path)
{
dispgfx_widget_t *p_dispwidget = (dispgfx_widget_t*)data;
gfx_widget_generic_message_state_t *state = &p_w_generic_message_st;
unsigned last_video_width = p_dispwidget->last_video_width;
unsigned last_video_height = p_dispwidget->last_video_height;
unsigned divider_width = p_dispwidget->divider_width_1px;
unsigned widget_padding = 0;
int text_width = 0;
const float base_aspect = 4.0f / 3.0f;
float widget_margin = 0.0f;
gfx_widget_font_data_t *font_msg_queue = &p_dispwidget->gfx_widget_fonts.msg_queue;
/* Set padding values */
state->text_padding = (unsigned)(((float)font_msg_queue->line_height * (2.0f / 3.0f)) + 0.5f);
widget_padding = state->text_padding * 2;
/* Set frame width */
state->frame_width = divider_width * 2;
/* Set minimum background width
* > Widget nominally occupies the full width
* of a 4:3 region at the centre of the screen,
* minus padding (it may expand if the text is
* too long to fit within these bounds) */
widget_margin = (float)last_video_width -
(base_aspect * (float)last_video_height);
if (widget_margin < 0.0f)
widget_margin = 0.0f;
state->bg_min_width = last_video_width - (unsigned)widget_margin -
((widget_padding + state->frame_width) * 2);
if (state->bg_min_width > last_video_width)
state->bg_min_width = last_video_width;
/* Set background width */
state->bg_width = state->text_padding * 2;
if (!string_is_empty(state->message))
{
text_width = font_driver_get_message_width(
font_msg_queue->font, state->message,
(unsigned)strlen(state->message), 1.0f);
if (text_width < 0)
text_width = 0;
state->bg_width += (unsigned)text_width;
}
if (state->bg_width < state->bg_min_width)
state->bg_width = state->bg_min_width;
if (state->bg_width > last_video_width)
state->bg_width = last_video_width;
/* Set background height */
state->bg_height = font_msg_queue->line_height * 2;
/* Set background draw positions */
state->bg_x = ((float)last_video_width - (float)state->bg_width) * 0.5f;
state->bg_y_start = (float)last_video_height + (float)state->frame_width;
state->bg_y_end = (float)last_video_height - (float)state->bg_height;
/* Set text draw positions
* > Text is drawn at the horizontal centre
* of the screen - unless it is too long to
* fit within the bounds of the window, in
* which case we shift it to the right such
* that the start of the string can be seen */
state->text_x = ((float)last_video_width
- (float)text_width) * 0.5f;
if (state->text_x < (float)state->text_padding)
state->text_x = (float)state->text_padding;
state->text_y_start = state->bg_y_start +
((float)state->bg_height * 0.5f) +
(float)font_msg_queue->line_centre_offset;
state->text_y_end = state->bg_y_end +
((float)state->bg_height * 0.5f) +
(float)font_msg_queue->line_centre_offset;
}
/* Widget iterate() */
static void gfx_widget_generic_message_iterate(void *user_data,
unsigned width, unsigned height, bool fullscreen,
const char *dir_assets, char *font_path,
bool is_threaded)
{
gfx_widget_generic_message_state_t *state = &p_w_generic_message_st;
if (state->message_updated)
{
enum gfx_widget_generic_message_status current_status = state->status;
uintptr_t alpha_tag = (uintptr_t)&state->alpha;
gfx_animation_ctx_entry_t animation_entry;
/* In all cases, reset any existing animation */
gfx_widget_generic_message_reset(false);
/* If an animation was already in progress,
* have to continue from the last active
* animation phase */
switch (current_status)
{
case GFX_WIDGET_GENERIC_MESSAGE_IDLE:
/* Trigger 'slide in' animation */
state->alpha = 0.0f;
animation_entry.easing_enum = EASING_OUT_QUAD;
animation_entry.tag = alpha_tag;
animation_entry.duration = GENERIC_MESSAGE_FADE_DURATION;
animation_entry.target_value = 1.0f;
animation_entry.subject = &state->alpha;
animation_entry.cb = gfx_widget_generic_message_slide_in_cb;
animation_entry.userdata = state;
gfx_animation_push(&animation_entry);
state->status = GFX_WIDGET_GENERIC_MESSAGE_SLIDE_IN;
break;
case GFX_WIDGET_GENERIC_MESSAGE_FADE_IN:
case GFX_WIDGET_GENERIC_MESSAGE_FADE_OUT:
{
/* If we are fading in or out, start
* a new fade in animation (transitioning
* from the current alpha value to 1.0) */
unsigned fade_duration = (unsigned)(((1.0f - state->alpha) *
(float)GENERIC_MESSAGE_FADE_DURATION) + 0.5f);
if (fade_duration > GENERIC_MESSAGE_FADE_DURATION)
fade_duration = GENERIC_MESSAGE_FADE_DURATION;
/* > If current and final alpha values are the
* same, or fade duration is zero, skip
* straight to the wait phase */
if ((state->alpha >= 1.0f) || (fade_duration < 1))
gfx_widget_generic_message_slide_in_cb(state);
else
{
animation_entry.easing_enum = EASING_OUT_QUAD;
animation_entry.tag = alpha_tag;
animation_entry.duration = fade_duration;
animation_entry.target_value = 1.0f;
animation_entry.subject = &state->alpha;
/* Note that 'slide in' and 'fade in' share
* the same callback */
animation_entry.cb = gfx_widget_generic_message_slide_in_cb;
animation_entry.userdata = state;
gfx_animation_push(&animation_entry);
state->status = GFX_WIDGET_GENERIC_MESSAGE_FADE_IN;
}
}
break;
case GFX_WIDGET_GENERIC_MESSAGE_WAIT:
/* If we are currently waiting, just
* 'reset' the wait timer */
gfx_widget_generic_message_slide_in_cb(state);
break;
default:
/* The only remaining case is
* GFX_WIDGET_GENERIC_MESSAGE_SLIDE_IN,
* which can never happen (state->message_updated
* will be false if it is, so this code will
* not be invoked). If we reach this point, an
* unknown error has occurred. We have already
* reset any existing animation, so no further
* action is required */
break;
}
state->message_updated = false;
}
}
/* Widget frame() */
static void gfx_widget_generic_message_frame(void *data, void *user_data)
{
gfx_display_t *p_disp = disp_get_ptr();
gfx_widget_generic_message_state_t *state = &p_w_generic_message_st;
if (state->status != GFX_WIDGET_GENERIC_MESSAGE_IDLE)
{
unsigned text_color;
float widget_alpha, bg_y, text_y;
video_frame_info_t *video_info = (video_frame_info_t*)data;
dispgfx_widget_t *p_dispwidget = (dispgfx_widget_t*)user_data;
unsigned video_width = video_info->width;
unsigned video_height = video_info->height;
void *userdata = video_info->userdata;
gfx_widget_font_data_t *font_msg_queue = &p_dispwidget->gfx_widget_fonts.msg_queue;
size_t msg_queue_size = p_dispwidget->current_msgs_size;
/* Determine status-dependent opacity/position
* values */
switch (state->status)
{
case GFX_WIDGET_GENERIC_MESSAGE_SLIDE_IN:
widget_alpha = state->alpha;
/* Use 'alpha' to determine the draw offset
* > Saves having to trigger two animations */
bg_y = state->bg_y_start + (state->alpha *
(state->bg_y_end - state->bg_y_start));
text_y = state->text_y_start + (state->alpha *
(state->text_y_end - state->text_y_start));
break;
case GFX_WIDGET_GENERIC_MESSAGE_FADE_IN:
case GFX_WIDGET_GENERIC_MESSAGE_FADE_OUT:
widget_alpha = state->alpha;
bg_y = state->bg_y_end;
text_y = state->text_y_end;
break;
case GFX_WIDGET_GENERIC_MESSAGE_WAIT:
widget_alpha = 1.0f;
bg_y = state->bg_y_end;
text_y = state->text_y_end;
break;
default:
widget_alpha = 0.0f;
bg_y = state->bg_y_start;
text_y = state->text_y_start;
break;
}
/* Draw widget */
if (widget_alpha > 0.0f)
{
/* Set opacity */
gfx_display_set_alpha(state->bg_color, widget_alpha);
gfx_display_set_alpha(state->frame_color, widget_alpha);
text_color = COLOR_TEXT_ALPHA(state->text_color,
(unsigned)(widget_alpha * 255.0f));
/* Background */
gfx_display_draw_quad(
p_disp,
userdata,
video_width,
video_height,
state->bg_x,
bg_y,
state->bg_width,
state->bg_height,
video_width,
video_height,
state->bg_color);
/* Frame */
/* > Top */
gfx_display_draw_quad(
p_disp,
userdata,
video_width,
video_height,
state->bg_x - (float)state->frame_width,
bg_y - (float)state->frame_width,
state->bg_width + (state->frame_width * 2),
state->frame_width,
video_width,
video_height,
state->frame_color);
/* > Left */
gfx_display_draw_quad(
p_disp,
userdata,
video_width,
video_height,
state->bg_x - (float)state->frame_width,
bg_y,
state->frame_width,
state->bg_height,
video_width,
video_height,
state->frame_color);
/* > Right */
gfx_display_draw_quad(
p_disp,
userdata,
video_width,
video_height,
state->bg_x + (float)state->bg_width,
bg_y,
state->frame_width,
state->bg_height,
video_width,
video_height,
state->frame_color);
/* Message */
gfx_widgets_draw_text(
font_msg_queue,
state->message,
state->text_x,
text_y,
video_width,
video_height,
text_color,
TEXT_ALIGN_LEFT,
true);
/* If the message queue is active, must flush the
* text here to avoid overlaps */
if (msg_queue_size > 0)
gfx_widgets_flush_text(video_width, video_height,
font_msg_queue);
}
}
}
/* Widget free() */
static void gfx_widget_generic_message_free(void)
{
gfx_widget_generic_message_reset(true);
}
/* Widget definition */
const gfx_widget_t gfx_widget_generic_message = {
NULL, /* init */
gfx_widget_generic_message_free,
NULL, /* context_reset*/
NULL, /* context_destroy */
gfx_widget_generic_message_layout,
gfx_widget_generic_message_iterate,
gfx_widget_generic_message_frame
};
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