extern wxList wxPendingDelete;
extern wxResourceCache *wxTheResourceCache;
-GdkVisual *wxVisualSetByExternal = (GdkVisual*) NULL;
-GdkColormap *wxColormapSetByExternal = (GdkColormap*) NULL;
-
unsigned char g_palette[64*3] =
{
0x0, 0x0, 0x0,
m_idleTag = 0;
m_topWindow = (wxWindow *) NULL;
m_exitOnFrameDelete = TRUE;
+ m_colorCube = (unsigned char*) NULL;
wxTheApp = this;
}
wxApp::~wxApp(void)
{
gtk_idle_remove( m_idleTag );
+
+ if (m_colorCube) free(m_colorCube);
}
bool wxApp::InitVisual()
{
- if (wxVisualSetByExternal)
- {
- /* this happens in the wxModule code of the OpenGl canvas.
- it chooses the best display for OpenGl and stores it
- in wxDisplaySetByExternal. we then have to make it the
- default for the system */
-
- gtk_widget_set_default_visual( wxVisualSetByExternal );
- }
-
- if (wxColormapSetByExternal)
- {
- /* OpenGl also gives us a colormap */
-
- gtk_widget_set_default_colormap( wxColormapSetByExternal );
- }
- else
- {
- /* this initiates the standard palette as defined by GdkImlib
- in the GNOME libraries. it ensures that all GNOME applications
- use the same 64 colormap entries on 8-bit displays so you
- can use several rather graphics-heavy applications at the
- same time */
+ /* Nothing to do for 15, 16, 24, 32 bit displays */
+
+ GdkVisual *visual = gdk_visual_get_system();
+ if (visual->depth > 8) return TRUE;
+
+ /* this initiates the standard palette as defined by GdkImlib
+ in the GNOME libraries. it ensures that all GNOME applications
+ use the same 64 colormap entries on 8-bit displays so you
+ can use several rather graphics-heavy applications at the
+ same time */
- GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
+ /*
+ GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
- for (int i = 0; i < 64; i++)
- {
- GdkColor col;
- col.red = g_palette[i*3 + 0] << 8;
- col.green = g_palette[i*3 + 1] << 8;
- col.blue = g_palette[i*3 + 2] << 8;
- col.pixel = 0;
+ for (int i = 0; i < 64; i++)
+ {
+ GdkColor col;
+ col.red = g_palette[i*3 + 0] << 8;
+ col.green = g_palette[i*3 + 1] << 8;
+ col.blue = g_palette[i*3 + 2] << 8;
+ col.pixel = 0;
- gdk_color_alloc( cmap, &col );
- }
+ gdk_color_alloc( cmap, &col );
+ }
- gtk_widget_set_default_colormap( cmap );
+ gtk_widget_set_default_colormap( cmap );
+ */
+
+ /* initialize color cube for 8-bit color reduction dithering */
+
+ GdkColormap *cmap = gtk_widget_get_default_colormap();
+
+ m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
+
+ for (int r = 0; r < 32; r++)
+ {
+ for (int g = 0; g < 32; g++)
+ {
+ for (int b = 0; b < 32; b++)
+ {
+ int rr = (r << 3) | (r >> 2);
+ int gg = (g << 3) | (g >> 2);
+ int bb = (b << 3) | (b >> 2);
+
+ GdkColor *colors = cmap->colors;
+ int max = 3 * (65536);
+ int index = -1;
+
+ for (int i = 0; i < cmap->size; i++)
+ {
+ int rdiff = ((rr << 8) - colors[i].red);
+ int gdiff = ((gg << 8)- colors[i].green);
+ int bdiff = ((bb << 8)- colors[i].blue);
+ int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+ if (sum < max) { index = i; max = sum; }
+ }
+
+ m_colorCube[ (r*1024) + (g*32) + b ] = index;
+ }
+ }
}
return TRUE;
gtk_init( &argc, &argv );
- wxModule::RegisterModules();
- if (!wxModule::InitializeModules()) return FALSE;
-
if (!wxTheApp->InitVisual()) return 0;
wxApp::CommonInit();
if (!wxTheApp->OnInitGui()) return 0;
+ wxModule::RegisterModules();
+ if (!wxModule::InitializeModules()) return FALSE;
+
// Here frames insert themselves automatically
// into wxTopLevelWindows by getting created
// in OnInit().