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restoring transparency in test/unittest_images.cxx (Windows and X11).

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Note: fl_draw_image() supports transparency (alpha channel) currently
only on Mac OS X.
This needs to be fixed for other platforms !


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7272 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Albrecht Schlosser
2010-03-15 23:39:47 +00:00
parent 7c018b55c2
commit 99e9c68215
1 changed files with 22 additions and 4 deletions
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test/unittest_images.cxx
+22 -4
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@@ -28,6 +28,10 @@
#include <FL/Fl_Box.H> #include <FL/Fl_Box.H>
#include <FL/fl_draw.H> #include <FL/fl_draw.H>
// Note: currently (March 2010) fl_draw_image() supports transparency with
// alpha channel only on Apple (Mac OS X), but Fl_RGB_Image->draw()
// supports transparency on all platforms !
// //
//------- test the image drawing capabilities of this implementation ---------- //------- test the image drawing capabilities of this implementation ----------
// //
@@ -69,30 +73,44 @@ public:
void draw() { void draw() {
Fl_Box::draw(); Fl_Box::draw();
// top left: RGB
int xx = x()+10, yy = y()+10; int xx = x()+10, yy = y()+10;
fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130);
fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3); fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3);
fl_draw("RGB", xx+134, yy+64); fl_draw("RGB", xx+134, yy+64);
// bottom left: RGBA
xx = x()+10; yy = y()+10+134; xx = x()+10; yy = y()+10+134;
fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130); fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130);
fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64); fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64);
fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64); fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64);
fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4); #ifdef __APPLE__
//i_rgba->draw(xx+1,yy+1); fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4); // Apple: okay w/alpha
#else
i_rgba->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha
#endif
fl_color(FL_BLACK); fl_draw("RGBA", xx+134, yy+64); fl_color(FL_BLACK); fl_draw("RGBA", xx+134, yy+64);
// top right: Gray
xx = x()+10+200; yy = y()+10; xx = x()+10+200; yy = y()+10;
fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130);
fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1); fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1);
fl_draw("Gray", xx+134, yy+64); fl_draw("Gray", xx+134, yy+64);
// bottom right: Gray+Alpha
xx = x()+10+200; yy = y()+10+134; xx = x()+10+200; yy = y()+10+134;
fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130); fl_color(FL_BLACK); fl_rectf(xx, yy, 130, 130);
fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64); fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 64, 64);
fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64); fl_color(FL_WHITE); fl_rectf(xx+65, yy+65, 64, 64);
// fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2); #ifdef __APPLE__
i_ga->draw(xx+1,yy+1); fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2); // Apple: okay w/alpha
#else
i_ga->draw(xx+1,yy+1); // only Fl_RGB_Image->draw() works with alpha
#endif
fl_color(FL_BLACK); fl_draw("Gray+Alpha", xx+134, yy+64); fl_color(FL_BLACK); fl_draw("Gray+Alpha", xx+134, yy+64);
} }
}; };