diff options
Diffstat (limited to 'backend/dvi/cairo-device.c')
| -rw-r--r-- | backend/dvi/cairo-device.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/backend/dvi/cairo-device.c b/backend/dvi/cairo-device.c index 51aea379..8d6553d6 100644 --- a/backend/dvi/cairo-device.c +++ b/backend/dvi/cairo-device.c @@ -202,12 +202,9 @@ dvi_cairo_alloc_colors (void *device_data, int density) { double frac; - GdkColor color, color_fg, color_bg; + GdkColor color, color_fg; int i, n; - - color_bg.red = (bg >> 16) & 0xff; - color_bg.green = (bg >> 8) & 0xff; - color_bg.blue = (bg >> 0) & 0xff; + unsigned int alpha; color_fg.red = (fg >> 16) & 0xff; color_fg.green = (fg >> 8) & 0xff; @@ -219,11 +216,12 @@ dvi_cairo_alloc_colors (void *device_data, pow ((double)i / n, 1 / gamma) : 1 - pow ((double)(n - i) / n, -gamma); - color.red = frac * ((double)color_fg.red - color_bg.red) + color_bg.red; - color.green = frac * ((double)color_fg.green - color_bg.green) + color_bg.green; - color.blue = frac * ((double)color_fg.blue - color_bg.blue) + color_bg.blue; - - pixels[i] = (color.red << 16) + (color.green << 8) + color.blue + 0xff000000; + color.red = frac * color_fg.red; + color.green = frac * color_fg.green; + color.blue = frac * color_fg.blue; + alpha = frac * 0xFF; + + pixels[i] = (alpha << 24) + (color.red << 16) + (color.green << 8) + color.blue; } return npixels; @@ -235,7 +233,7 @@ dvi_cairo_create_image (void *device_data, Uint height, Uint bpp) { - return cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height); + return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height); } static void @@ -256,6 +254,8 @@ dvi_cairo_put_pixel (void *image, int x, int y, Ulong color) rowstride = cairo_image_surface_get_stride (surface); p = (guint32*) (cairo_image_surface_get_data (surface) + y * rowstride + x * 4); + /* per cairo docs, must flush before modifying outside of cairo */ + cairo_surface_flush(surface); *p = color; } @@ -343,7 +343,7 @@ mdvi_cairo_device_render (DviContext* dvi) memset (pixels, 0xff, page_height * rowstride); surface = cairo_image_surface_create_for_data (pixels, - CAIRO_FORMAT_RGB24, + CAIRO_FORMAT_ARGB32, page_width, page_height, rowstride); cairo_surface_set_user_data (surface, &key, |