gecko-dev/cmd/gnomefe/gnome-img.c
blizzard%appliedtheory.com 3f7f35b124 Integrate patch from Michael O'Reilly <michael@metal.iinet.net.au>
This patch starts work on displaying pixmaps.
1998-10-02 03:01:01 +00:00

514 lines
17 KiB
C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
gnomeimg.c --- gnome functions for fe
specific images stuff.
*/
#define JMC_INIT_IMGCB_ID
#include "xp_core.h"
#include "structs.h"
#include "ntypes.h"
#include "libimg.h"
#include "il_util.h"
#include "prtypes.h"
#include "g-util.h"
#include "g-types.h"
#include "gnomefe.h"
#include "g-html-view.h"
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <X11/X.h>
#define HOWMANY(x, r) (((x) + ((r) - 1)) / (r))
#define ROUNDUP(x, r) (HOWMANY(x, r) * (r))
JMC_PUBLIC_API(void)
_IMGCB_init(struct IMGCB* self, JMCException* *exception)
{
printf ("_IMGCB_init (nothing to do)\n");
}
JMC_PUBLIC_API(void*)
_IMGCB_getBackwardCompatibleInterface(struct IMGCB* self,
const JMCInterfaceID* iid,
JMCException* *exception)
{
printf ("_IMGCB_getBackwardCompatibleInterface (nothing to do)\n");
}
JMC_PUBLIC_API(void)
_IMGCB_NewPixmap(IMGCB* img_cb, jint op, void *dpy_cx, jint width, jint height,
IL_Pixmap *image, IL_Pixmap *mask)
{
MWContext *context = (MWContext *)dpy_cx; /* XXX This should be the FE's
display context. */
uint8 img_depth;
NI_PixmapHeader *img_header = &image->header;
NI_PixmapHeader *mask_header = mask ? &mask->header : NULL;
Pixmap img_x_pixmap=0, mask_x_pixmap = 0;
fe_PixmapClientData *img_client_data, *mask_client_data = NULL;
MozHTMLView *view = 0;
unsigned int visual_depth;
fe_Drawable *fe_drawable;
printf ("_IMGCB_NewPixmap (context %p, image %p, width %d, height %d)\n",
context, image, width, height);
/* Allocate the client data structures for the IL_Pixmaps. */
img_client_data = XP_NEW_ZAP(fe_PixmapClientData);
if (!img_client_data) {
image->bits = NULL;
mask->bits = NULL;
return;
}
if (mask) {
mask_client_data = XP_NEW_ZAP(fe_PixmapClientData);
if (!mask_client_data) {
image->bits = NULL;
mask->bits = NULL;
return;
}
}
/* try to get the required display parameters from the html view */
view = find_html_view(context);
XP_ASSERT(view);
fe_drawable = view->drawable;
visual_depth = gdk_visual_get_best_depth();
/* Override the image and mask dimensions with the requested target
dimensions. This instructs the image library to do any necessary
scaling. */
img_header->width = width;
img_header->height = height;
if (mask) {
mask_header->width = width;
mask_header->height = height;
}
/* Override the image colorspace with the display colorspace. This
instructs the image library to decode to the display colorspace
instead of decoding to the image's source colorspace. */
IL_ReleaseColorSpace(img_header->color_space);
img_header->color_space = context->color_space;
IL_AddRefToColorSpace(img_header->color_space);
/* Compute the number of bytes per scan line for the image and mask,
and make sure it is quadlet aligned. */
img_depth = img_header->color_space->pixmap_depth;
XP_ASSERT(img_depth == visual_depth);
img_header->widthBytes = (img_header->width * img_depth + 7) / 8;
img_header->widthBytes = ROUNDUP(img_header->widthBytes, 4);
if (mask) {
mask_header->widthBytes = (mask_header->width + 7) / 8;
mask_header->widthBytes = ROUNDUP(mask_header->widthBytes, 4);
}
/* Allocate memory for the image bits, and for the mask bits (if
required.) */
image->bits = calloc(img_header->widthBytes * img_header->height, 1);
if (!image->bits)
return;
if (mask) {
mask->bits = calloc(mask_header->widthBytes * mask_header->height, 1);
if (!mask->bits) {
free(image->bits);
image->bits = NULL;
return;
}
}
/* Create an X pixmap for the image, and for the mask (if required.) */
img_client_data->gdk_pixmap =
gdk_pixmap_new((GdkWindow *)fe_drawable->drawable,
img_header->width,
img_header->height,
visual_depth);
if (mask)
mask_client_data->gdk_pixmap =
gdk_pixmap_new((GdkWindow *)fe_drawable->drawable,
mask_header->width,
mask_header->height,
1);
printf("\tNewpixmap: width, height = %d, %d\n", img_header->width,
img_header->height);
/* Fill in the pixmap client_data. */
image->client_data = (void *)img_client_data;
if (mask)
mask->client_data = (void *)mask_client_data;
}
JMC_PUBLIC_API(void)
_IMGCB_UpdatePixmap(IMGCB* img_cb, jint op, void* dpy_cx, IL_Pixmap* pixmap,
jint x_offset, jint y_offset, jint width, jint height)
{
uint32 widthBytes;
MWContext *context = (MWContext *)dpy_cx; /* XXX This should be the FE's
display context. */
unsigned int visual_depth;
unsigned int pixmap_depth; /* Depth of the IL_Pixmap. */
Visual *visual;
Pixmap x_pixmap;
Display *dpy;
XImage *x_image;
GC gc;
XGCValues gcv;
IL_ColorSpace *color_space = pixmap->header.color_space;
char *bits;
fe_PixmapClientData *pixmap_client_data;
fe_Drawable *fe_drawable;
MozHTMLView *view = 0;
GdkVisual *gdk_visual;
GdkPixmap *gdk_pixmap;
GdkImage *gdk_image;
GdkGC *gdk_gc;
GdkGCValues *gdkgc_values;
printf ("_IMGCB_UpdatePixmap (context %p, image %p, width %d, height %d)\n",
context, pixmap, width, height) ;
if (!context)
return;
/* get the client data */
pixmap_client_data = (fe_PixmapClientData *)pixmap->client_data;
view = find_html_view(context);
XP_ASSERT(view);
fe_drawable = view->drawable;
gdk_visual = gdk_window_get_visual((GdkWindow *)fe_drawable->drawable);
if (gdk_visual == NULL) {
printf("Warning: gdk_visual in _IMGCB_UpdatePixmap is null.\n");
return;
}
gdk_pixmap = pixmap_client_data->gdk_pixmap;
/* try to get the required display parameters from the pixmap */
visual_depth = gdk_visual_get_best_depth();
dpy = GDK_WINDOW_XDISPLAY(pixmap_client_data->gdk_pixmap);
/* Check for zero dimensions. */
if (width == 0 || height == 0)
return;
/* Get the depth of the IL_Pixmap. This should be the same as the
visual_pixmap_depth if the IL_Pixmap is an image, or 1 if the
IL_Pixmap is a mask. */
pixmap_depth = color_space->pixmap_depth;
widthBytes = pixmap->header.widthBytes;
bits = (unsigned char *)pixmap->bits + widthBytes * y_offset;
x_image = XCreateImage(dpy, visual,
(pixmap_depth == 1 ? 1 : visual_depth),
(pixmap_depth == 1 ? XYPixmap : ZPixmap),
x_offset, /* offset */
bits,
width,
height,
8, /* bitmap_pad */
widthBytes); /* bytes_per_line */
if (pixmap_depth == 1) {
/* Image library always places pixels left-to-right MSB to LSB */
x_image->bitmap_bit_order = MSBFirst;
/* This definition doesn't depend on client byte ordering
because the image library ensures that the bytes in
bitmask data are arranged left to right on the screen,
low to high address in memory. */
x_image->byte_order = MSBFirst;
}
else {
#if defined(IS_LITTLE_ENDIAN)
x_image->byte_order = LSBFirst;
#elif defined (IS_BIG_ENDIAN)
x_image->byte_order = MSBFirst;
#else
ERROR! Endianness is unknown;
#endif
}
pixmap_client_data = (fe_PixmapClientData *)pixmap->client_data;
x_pixmap = GDK_WINDOW_XWINDOW(pixmap_client_data->gdk_pixmap);
memset(&gcv, ~0, sizeof(XGCValues));
gcv.function = GXcopy;
/* The pixmap_depth does not correspond to that of the GCs in the
cache, so create a new GC. */
gc = XCreateGC(dpy, x_pixmap, GCFunction, &gcv);
XPutImage(dpy, x_pixmap, gc, x_image, x_offset, 0, x_offset,
y_offset, width, height);
XFreeGC(dpy, gc);
x_image->data = 0; /* Don't free the IL_Pixmap's bits. */
XDestroyImage(x_image);
}
JMC_PUBLIC_API(void)
_IMGCB_ControlPixmapBits(IMGCB* img_cb, jint op, void* dpy_cx,
IL_Pixmap* pixmap, IL_PixmapControl message)
{
if (message == IL_RELEASE_BITS) {
printf ("_IMGCB_ControlPixmapBits (image complete)\n");
}
}
JMC_PUBLIC_API(void)
_IMGCB_DestroyPixmap(IMGCB* img_cb, jint op, void* dpy_cx, IL_Pixmap* pixmap)
{
fe_PixmapClientData *pixmap_client_data;
printf ("_IMGCB_DestroyPixmap\n");
pixmap_client_data = (fe_PixmapClientData *)pixmap->client_data;
if (!pixmap_client_data)
return;
if (pixmap_client_data->gdk_pixmap)
gdk_pixmap_unref(pixmap_client_data->gdk_pixmap);
if (pixmap->bits) {
free(pixmap->bits);
pixmap->bits = NULL;
}
}
JMC_PUBLIC_API(void)
_IMGCB_DisplayPixmap(IMGCB* img_cb, jint op, void* dpy_cx, IL_Pixmap* image,
IL_Pixmap* mask, jint x, jint y, jint x_offset,
jint y_offset, jint j, jint k, jint width, jint height)
{
MWContext *context = (MWContext *)dpy_cx; /* XXX This should be the FE's
display context. */
int32 img_x_offset, img_y_offset; /* Offset of image in drawable. */
int32 rect_x_offset, rect_y_offset; /* Offset of update rect in
drawable. */
NI_PixmapHeader *img_header = &image->header;
uint32 img_width = img_header->width; /* Image width. */
uint32 img_height = img_header->height; /* Image height. */
fe_Drawable *fe_drawable = find_html_view(context)->drawable;
GdkDrawable *drawable = fe_drawable->drawable;
fe_PixmapClientData *img_client_data, *mask_client_data;
GdkPixmap *img_x_pixmap=NULL, *mask_x_pixmap=NULL;
GdkGC *gc;
GdkGCValues gcv;
GdkGCValuesMask flags;
XP_Bool tiling_required = FALSE;
GdkWindow * window = (GdkWindow *)fe_drawable->drawable;
printf ("_IMGCB_DisplayPixmap (context %p, image %p, width %d, height %d)\n",
context, image, width, height);
/* Check for zero display area. */
if (width == 0 || height == 0)
return;
/* Retrieve the server pixmaps. */
img_client_data = (fe_PixmapClientData *)image->client_data;
if (!img_client_data)
return;
img_x_pixmap = img_client_data->gdk_pixmap;
if (!img_x_pixmap)
return;
if (mask) {
mask_client_data = (fe_PixmapClientData *)mask->client_data;
mask_x_pixmap = mask_client_data->gdk_pixmap;
}
/* Determine whether tiling is required. */
if ((x_offset + width > img_width) || (y_offset + height > img_height))
tiling_required = TRUE;
/* Compute the offset into the drawable of the image origin. */
img_x_offset = x - find_html_view(context)->doc_x +
fe_drawable->x_origin;
img_y_offset = y - find_html_view(context)->doc_y +
fe_drawable->y_origin;
/* Compute the offset into the drawable for the area to be drawn. */
rect_x_offset = img_x_offset + x_offset;
rect_y_offset = img_y_offset + y_offset;
/* Do the actual drawing. There are several cases to be dealt with:
transparent vs non-transparent, tiled vs non-tiled and clipped by
compositor's clip region vs not clipped. */
memset(&gcv, ~0, sizeof (gcv));
printf("Display: mask %p, tiling %d, clip %p\n", mask,
tiling_required, fe_drawable->clip_region);
if (mask) { /* Image is transparent. */
#if 0
if (tiling_required) {
#endif
/* Offsets are measured wrt the origin of the tiled mask to
be generated. */
int x_tile_offset = img_x_offset - rect_x_offset;
int y_tile_offset = img_y_offset - rect_y_offset;
GdkPixmap *tmp_pixmap = 0;
#if 0
/* Create the mask by tiling the mask_x_pixmap and computing
the intersection with the compositor's clip region. */
tmp_pixmap =
fe_TiledMaskWithClipRegion(dpy, drawable, mask_x_pixmap,
width, height, x_tile_offset,
y_tile_offset, -rect_x_offset,
-rect_y_offset,
(Region)fe_drawable->clip_region);
#endif
/* Create the GC. Don't attempt to get a GC from the GC cache
because we are using a temporary mask pixmap. */
gcv.fill = GDK_TILED;
gcv.tile = img_x_pixmap;
gcv.ts_x_origin = img_x_offset;
gcv.ts_y_origin = img_y_offset;
/*gcv.clip_mask = tmp_pixmap; */
gcv.clip_x_origin = rect_x_offset;
gcv.clip_y_origin = rect_y_offset;
/*
flags = GDK_GC_TILE | GDK_GC_TS_X_ORIGIN |
GDK_GC_TS_Y_ORIGIN | GDK_GC_CLIP_MASK |
GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN;
*/
printf("Warning: masked images not yet supported in DrawPixmap\n");
flags = GDK_GC_TILE | GDK_GC_TS_X_ORIGIN |
GDK_GC_TS_Y_ORIGIN |
GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN;
gc = gdk_gc_new_with_values(window, &gcv, flags);
gdk_draw_rectangle(drawable, gc, TRUE,
rect_x_offset, rect_y_offset, width,
height);
/* Clean up. */
gdk_gc_destroy(gc);
gdk_pixmap_unref(tmp_pixmap);
#if 0
}
else { /* Tiling not required. */
if (fe_drawable->clip_region) {
/* Draw the image (transparent, non-tiled and with
clip_region.) x_offset and y_offset are wrt the image
origin, while rect_x_offset and rect_y_offset are wrt the
drawable origin. */
fe_DrawMaskedImageWithClipRegion(dpy, drawable, img_x_pixmap,
mask_x_pixmap, width, height,
img_x_offset, img_y_offset,
x_offset, y_offset,
(Region)fe_drawable->clip_region);
}
else { /* No clip region. */
/* XXX transparent, non-tiled and no clip_region. */
}
}
#endif
}
else { /* Image is not transparent. */
if (tiling_required) {
gcv.fill = GDK_TILED;
gcv.tile = img_x_pixmap;
gcv.ts_x_origin = img_x_offset;
gcv.ts_y_origin = img_y_offset;
flags = GDK_GC_TILE | GDK_GC_TS_X_ORIGIN |
GDK_GC_TS_Y_ORIGIN;
gc = gdk_gc_new_with_values(window, &gcv, flags);
#if 1
if (fe_drawable->clip_region) { /* This is a bad hack */
GdkRegionPrivate * hack = gdk_region_new();
FE_CopyRegion((Region)fe_drawable->clip_region,
hack->xregion );
gdk_gc_set_clip_region(gc, hack);
gdk_region_destroy(hack);
}
#endif
gdk_draw_rectangle(drawable, gc, TRUE,
rect_x_offset, rect_y_offset, width,
height);
/* Clean up. */
gdk_gc_destroy(gc);
}
else { /* Tiling not required. */
gc = gdk_gc_new(window);
#if 1
if (fe_drawable->clip_region) { /* This is a bad hack */
GdkRegionPrivate * hack = gdk_region_new();
FE_CopyRegion((Region)fe_drawable->clip_region,
hack->xregion );
gdk_gc_set_clip_region(gc, hack);
gdk_region_destroy(hack);
}
#endif
gdk_draw_pixmap(drawable, gc, img_x_pixmap,
x_offset, y_offset,
rect_x_offset, rect_y_offset,
width, height);
gdk_gc_destroy(gc);
}
}
}
JMC_PUBLIC_API(void)
_IMGCB_GetIconDimensions(IMGCB* img_cb, jint op, void* dpy_cx, int* width,
int* height, jint icon_number)
{
printf ("_IMGCB_GetIconDimensions\n");
}
JMC_PUBLIC_API(void)
_IMGCB_DisplayIcon(IMGCB* img_cb, jint op, void* dpy_cx, jint x, jint y,
jint icon_number)
{
printf ("_IMGCB_DisplayIcon\n");
}
/* Mocha image group observer callback. */
void
FE_MochaImageGroupObserver(XP_Observable observable, XP_ObservableMsg message,
void *message_data, void *closure)
{
printf("FE_MochaImageGroupObserver (empty)\n");
}