diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/WinAPI/Fl_WinAPI_System_Driver.H | 1 | ||||
| -rw-r--r-- | src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H index e5bfb41b8..5e580f15c 100644 --- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H +++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.H @@ -83,6 +83,7 @@ public: virtual char *preference_rootnode(Fl_Preferences *prefs, Fl_Preferences::Root root, const char *vendor, const char *application); virtual void *dlopen(const char *filename); + virtual void png_extra_rgba_processing(unsigned char *array, int w, int h); }; #endif // FL_WINAPI_SYSTEM_DRIVER_H diff --git a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx index 9df5b2f71..529f9ade7 100644 --- a/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx +++ b/src/drivers/WinAPI/Fl_WinAPI_System_Driver.cxx @@ -868,6 +868,14 @@ void *Fl_WinAPI_System_Driver::dlopen(const char *filename) return LoadLibrary(filename); } +void Fl_WinAPI_System_Driver::png_extra_rgba_processing(unsigned char *ptr, int w, int h) +{ + // Some Windows graphics drivers don't honor transparency when RGB == white + // Convert RGB to 0 when alpha == 0... + for (int i = w * h; i > 0; i --, ptr += 4) { + if (!ptr[3]) ptr[0] = ptr[1] = ptr[2] = 0; + } +} // // End of "$Id$". |