170 lines
4.0 KiB
C
170 lines
4.0 KiB
C
#include "fonts.h"
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ClutterFont*
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font_new (const char *face)
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{
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ClutterFont *font;
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PangoFontDescription *desc;
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font = util_malloc0(sizeof(ClutterFont));
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font->font_map = pango_ft2_font_map_new ();
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pango_ft2_font_map_set_resolution (PANGO_FT2_FONT_MAP (font->font_map),
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96., 96.);
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desc = pango_font_description_from_string (face);
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font->context
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= pango_ft2_font_map_create_context (PANGO_FT2_FONT_MAP (font->font_map));
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pango_context_set_font_description (font->context, desc);
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pango_font_description_free (desc);
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return font;
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}
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#if 0
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static int
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decoration_get_title_width (LmcDecoration *decoration)
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{
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int title_space;
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int width;
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title_space = (decoration->window_width
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+ lmc_theme->border_info.left
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+ lmc_theme->border_info.right
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- lmc_theme->border_info.left_unscaled
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- lmc_theme->border_info.right_unscaled);
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title_space = MAX (title_space, 0);
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pango_layout_get_pixel_size (decoration->layout, &width, NULL);
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return MIN (width + TITLE_RIGHT_PAD, title_space);
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}
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#endif
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static void
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get_layout_bitmap (PangoLayout *layout,
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FT_Bitmap *bitmap,
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PangoRectangle *ink)
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{
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PangoRectangle ink_rect;
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pango_layout_get_extents (layout, &ink_rect, NULL);
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/* XXX why the >> 10 */
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ink->x = ink_rect.x >> 10;
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ink->width = ((ink_rect.x + ink_rect.width + 1023) >> 10) - ink->x;
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ink->y = ink_rect.y >> 10;
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ink->height = ((ink_rect.y + ink_rect.height + 1023) >> 10) - ink->y;
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if (ink->width == 0)
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ink->width = 1;
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if (ink->height == 0)
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ink->height = 1;
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bitmap->width = ink->width;
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bitmap->pitch = (bitmap->width + 3) & ~3;
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bitmap->rows = ink->height;
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bitmap->buffer = malloc (bitmap->pitch * bitmap->rows);
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bitmap->num_grays = 256;
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bitmap->pixel_mode = FT_PIXEL_MODE_GRAY;
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memset (bitmap->buffer, 0, bitmap->pitch * bitmap->rows);
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pango_ft2_render_layout (bitmap, layout, - ink->x, - ink->y);
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}
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static void
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draw_layout_on_pixbuf (PangoLayout *layout,
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Pixbuf *pixb,
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const PixbufPixel *color,
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int x,
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int y,
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int clip_x,
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int clip_y,
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int clip_width,
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int clip_height)
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{
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PangoRectangle ink;
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FT_Bitmap bitmap;
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int i, j;
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unsigned char *layout_bits;
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get_layout_bitmap (layout, &bitmap, &ink);
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layout_bits = bitmap.buffer;
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for (j = y + ink.y; j < y + ink.y + ink.height; j++)
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{
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if (j >= clip_y && j < clip_y + clip_height)
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{
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int start_x, end_x;
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start_x = MAX (x + ink.x, clip_x);
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end_x = MIN (x + ink.x + ink.width, clip_x + clip_width);
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if (start_x < end_x)
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{
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unsigned char *b = layout_bits + (start_x - (x + ink.x));
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for (i = start_x ; i < end_x; i++)
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{
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PixbufPixel pixel;
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int tr1, tg1, tb1, tr2, tg2, tb2;
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int a = (*b * color->a + 0x80) >> 8;
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pixbuf_get_pixel (pixb, i, j, &pixel);
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tr1 = (255 - a) * pixel.r + 0x80;
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tr2 = a * color->r + 0x80;
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pixel.r = ((tr1 + (tr1 >> 8)) >> 8) + ((tr2 + (tr2 >> 8)) >> 8);
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tg1 = (255 - a) * pixel.g + 0x80;
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tg2 = a * color->g + 0x80;
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pixel.g = ((tg1 + (tg1 >> 8)) >> 8) + ((tg2 + (tg2 >> 8)) >> 8);
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tb1 = (255 - a) * pixel.b + 0x80;
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tb2 = a * color->b + 0x80;
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pixel.b = ((tb1 + (tb1 >> 8)) >> 8) + ((tb2 + (tb2 >> 8)) >> 8);
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pixbuf_set_pixel (pixb, i, j, &pixel);
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b++;
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}
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}
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}
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layout_bits += bitmap.pitch;
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}
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free (bitmap.buffer);
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}
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void
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font_draw(ClutterFont *font,
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Pixbuf *pixb,
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const char *text,
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int x,
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int y,
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PixbufPixel *p)
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{
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int layout_width, layout_height;
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PangoLayout *layout;
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layout = pango_layout_new (font->context);
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pango_layout_set_text (layout, text, -1);
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pango_layout_get_pixel_size (layout,
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&layout_width, &layout_height);
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/* cant rely on just clip - need to set layout width too */
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draw_layout_on_pixbuf (layout, pixb, p, x, y,
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x,
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y,
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pixb->width - x,
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pixb->height - y);
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}
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