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-rw-r--r--src/Fl_Image.cxx140
1 files changed, 139 insertions, 1 deletions
diff --git a/src/Fl_Image.cxx b/src/Fl_Image.cxx
index bf39f6b09..65636c73c 100644
--- a/src/Fl_Image.cxx
+++ b/src/Fl_Image.cxx
@@ -437,7 +437,7 @@ void Fl_RGB_Image::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
fl_device->draw(this, XP, YP, WP, HP, cx, cy);
}
-void Fl_RGB_Image::generic_device_draw(int XP, int YP, int WP, int HP, int cx, int cy) {
+/*void Fl_RGB_Image::generic_device_draw(int XP, int YP, int WP, int HP, int cx, int cy) {
// Don't draw an empty image...
if (!d() || !array) {
draw_empty(XP, YP);
@@ -542,8 +542,146 @@ void Fl_RGB_Image::generic_device_draw(int XP, int YP, int WP, int HP, int cx, i
#else
# error unsupported platform
#endif
+}*/
+
+static int start(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int w, int h, int cx, int cy,
+ int &X, int &Y, int &W, int &H)
+{
+ // account for current clip region (faster on Irix):
+ fl_clip_box(XP,YP,WP,HP,X,Y,W,H);
+ cx += X-XP; cy += Y-YP;
+ // clip the box down to the size of image, quit if empty:
+ if (cx < 0) {W += cx; X -= cx; cx = 0;}
+ if (cx+W > w) W = w-cx;
+ if (W <= 0) return 1;
+ if (cy < 0) {H += cy; Y -= cy; cy = 0;}
+ if (cy+H > h) H = h-cy;
+ if (H <= 0) return 1;
+ return 0;
}
+#ifdef __APPLE__
+void Fl_Quartz_Graphics_Driver::draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy) {
+ int X, Y, W, H;
+ // Don't draw an empty image...
+ if (!img->d() || !img->array) {
+ img->draw_empty(XP, YP);
+ return;
+ }
+ if (start(img, XP, YP, WP, HP, img->w(), img->h(), cx, cy, X, Y, W, H)) {
+ return;
+ }
+ if (!img->id_) {
+ CGColorSpaceRef lut = 0;
+ if (img->d()<=2)
+ lut = CGColorSpaceCreateDeviceGray();
+ else
+ lut = CGColorSpaceCreateDeviceRGB();
+ CGDataProviderRef src = CGDataProviderCreateWithData( 0L, img->array, img->w()*img->h()*img->d(), 0L);
+ img->id_ = CGImageCreate( img->w(), img->h(), 8, img->d()*8, img->ld()?img->ld():img->w()*img->d(),
+ lut, (img->d()&1)?kCGImageAlphaNone:kCGImageAlphaLast,
+ src, 0L, false, kCGRenderingIntentDefault);
+ CGColorSpaceRelease(lut);
+ CGDataProviderRelease(src);
+ }
+ if (img->id_ && fl_gc) {
+ CGRect rect = { { X, Y }, { W, H } };
+ Fl_X::q_begin_image(rect, cx, cy, img->w(), img->h());
+ CGContextDrawImage(fl_gc, rect, (CGImageRef)img->id_);
+ Fl_X::q_end_image();
+ }
+}
+
+#elif defined(WIN32)
+void Fl_GDI_Graphics_Driver::draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy) {
+ int X, Y, W, H;
+ // Don't draw an empty image...
+ if (!img->d() || !img->array) {
+ img->draw_empty(XP, YP);
+ return;
+ }
+ if (start(img, XP, YP, WP, HP, img->w(), img->h(), cx, cy, X, Y, W, H)) {
+ return;
+ }
+ if (!img->id_) {
+ img->id_ = fl_create_offscreen(img->w(), img->h());
+ if ((img->d() == 2 || img->d() == 4) && fl_can_do_alpha_blending()) {
+ fl_begin_offscreen((Fl_Offscreen)img->id_);
+ fl_draw_image(img->array, 0, 0, img->w(), img->h(), img->d()|FL_IMAGE_WITH_ALPHA, img->ld());
+ fl_end_offscreen();
+ } else {
+ fl_begin_offscreen((Fl_Offscreen)img->id_);
+ fl_draw_image(img->array, 0, 0, img->w(), img->h(), img->d(), img->ld());
+ fl_end_offscreen();
+ if (img->d() == 2 || img->d() == 4) {
+ img->mask_ = fl_create_alphamask(img->w(), img->h(), img->d(), img->ld(), img->array);
+ }
+ }
+ }
+ if (img->mask_) {
+ HDC new_gc = CreateCompatibleDC(fl_gc);
+ int save = SaveDC(new_gc);
+ SelectObject(new_gc, (void*)img->mask_);
+ BitBlt(fl_gc, X, Y, W, H, new_gc, cx, cy, SRCAND);
+ SelectObject(new_gc, (void*)img->id_);
+ BitBlt(fl_gc, X, Y, W, H, new_gc, cx, cy, SRCPAINT);
+ RestoreDC(new_gc,save);
+ DeleteDC(new_gc);
+ } else if (img->d()==2 || img->d()==4) {
+ fl_copy_offscreen_with_alpha(X, Y, W, H, (Fl_Offscreen)img->id_, cx, cy);
+ } else {
+ fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)img->id_, cx, cy);
+ }
+}
+
+#else
+void Fl_Xlib_Graphics_Driver::draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy) {
+ int X, Y, W, H;
+ // Don't draw an empty image...
+ if (!img->d() || !img->array) {
+ img->draw_empty(XP, YP);
+ return;
+ }
+ if (start(img, XP, YP, WP, HP, img->w(), img->h(), cx, cy, X, Y, W, H)) {
+ return;
+ }
+ if (!img->id_) {
+ if (img->d() == 1 || img->d() == 3) {
+ img->id_ = fl_create_offscreen(img->w(), img->h());
+ fl_begin_offscreen((Fl_Offscreen)img->id_);
+ fl_draw_image(img->array, 0, 0, img->w(), img->h(), img->d(), img->ld());
+ fl_end_offscreen();
+ }
+ }
+ if (img->id_) {
+ if (img->mask_) {
+ // I can't figure out how to combine a mask with existing region,
+ // so cut the image down to a clipped rectangle:
+ int nx, ny; fl_clip_box(X,Y,W,H,nx,ny,W,H);
+ cx += nx-X; X = nx;
+ cy += ny-Y; Y = ny;
+ // make X use the bitmap as a mask:
+ XSetClipMask(fl_display, fl_gc, img->mask_);
+ int ox = X-cx; if (ox < 0) ox += img->w();
+ int oy = Y-cy; if (oy < 0) oy += img->h();
+ XSetClipOrigin(fl_display, fl_gc, X-cx, Y-cy);
+ }
+
+ fl_copy_offscreen(X, Y, W, H, img->id_, cx, cy);
+
+ if (img->mask_) {
+ // put the old clip region back
+ XSetClipOrigin(fl_display, fl_gc, 0, 0);
+ fl_restore_clip();
+ }
+ } else {
+ // Composite image with alpha manually each time...
+ alpha_blend(img, X, Y, W, H, cx, cy);
+ }
+}
+
+#endif
+
void Fl_RGB_Image::label(Fl_Widget* widget) {
widget->image(this);
}
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