comparison: pidgin/pidgingdkpixbuf.c
pidgin/pidgingdkpixbuf.c
- changeset 39571
- b88f466a4a4d
- parent 39568
- f4714f1de6d0
- child 41086
- 631e6cba8635
equal
deleted
inserted
replaced
| 39570:a6ec70c31e9e | 39571:b88f466a4a4d |
|---|---|
| 65 width = gdk_pixbuf_get_width(pixbuf); | 65 width = gdk_pixbuf_get_width(pixbuf); |
| 66 height = gdk_pixbuf_get_height(pixbuf); | 66 height = gdk_pixbuf_get_height(pixbuf); |
| 67 rowstride = gdk_pixbuf_get_rowstride(pixbuf); | 67 rowstride = gdk_pixbuf_get_rowstride(pixbuf); |
| 68 pixels = gdk_pixbuf_get_pixels(pixbuf); | 68 pixels = gdk_pixbuf_get_pixels(pixbuf); |
| 69 | 69 |
| 70 if (width < 6 || height < 6) | 70 if (width < 6 || height < 6) { |
| 71 return; | 71 return; |
| 72 } | |
| 72 | 73 |
| 73 /* The following code will conver the alpha of the pixel data in all | 74 /* The following code will conver the alpha of the pixel data in all |
| 74 * corners to look something like the following diagram. | 75 * corners to look something like the following diagram. |
| 75 * | 76 * |
| 76 * 00 80 c0 FF FF c0 80 00 | 77 * 00 80 c0 FF FF c0 80 00 |
| 116 pidgin_gdk_pixbuf_is_opaque(GdkPixbuf *pixbuf) { | 117 pidgin_gdk_pixbuf_is_opaque(GdkPixbuf *pixbuf) { |
| 117 gint height, rowstride, i; | 118 gint height, rowstride, i; |
| 118 guchar *pixels; | 119 guchar *pixels; |
| 119 guchar *row; | 120 guchar *row; |
| 120 | 121 |
| 121 if (!gdk_pixbuf_get_has_alpha(pixbuf)) | 122 if (!gdk_pixbuf_get_has_alpha(pixbuf)) { |
| 122 return TRUE; | 123 return TRUE; |
| 124 } | |
| 123 | 125 |
| 124 height = gdk_pixbuf_get_height (pixbuf); | 126 height = gdk_pixbuf_get_height (pixbuf); |
| 125 rowstride = gdk_pixbuf_get_rowstride (pixbuf); | 127 rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
| 126 pixels = gdk_pixbuf_get_pixels (pixbuf); | 128 pixels = gdk_pixbuf_get_pixels (pixbuf); |
| 127 | 129 |
| 128 /* check the top row */ | 130 /* check the top row */ |
| 129 row = pixels; | 131 row = pixels; |
| 130 for (i = 3; i < rowstride; i+=4) { | 132 for (i = 3; i < rowstride; i+=4) { |
| 131 if (row[i] < 0xfe) | 133 if (row[i] < 0xfe) { |
| 132 return FALSE; | 134 return FALSE; |
| 135 } | |
| 133 } | 136 } |
| 134 | 137 |
| 135 /* check the left and right sides */ | 138 /* check the left and right sides */ |
| 136 for (i = 1; i < height - 1; i++) { | 139 for (i = 1; i < height - 1; i++) { |
| 137 row = pixels + (i * rowstride); | 140 row = pixels + (i * rowstride); |
| 138 if (row[3] < 0xfe || row[rowstride - 1] < 0xfe) { | 141 if (row[3] < 0xfe || row[rowstride - 1] < 0xfe) { |
| 139 return FALSE; | 142 return FALSE; |
| 140 } | 143 } |
| 141 } | 144 } |
| 142 | 145 |
| 143 /* check the bottom */ | 146 /* check the bottom */ |
| 144 row = pixels + ((height - 1) * rowstride); | 147 row = pixels + ((height - 1) * rowstride); |
| 145 for (i = 3; i < rowstride; i += 4) { | 148 for (i = 3; i < rowstride; i += 4) { |
| 146 if (row[i] < 0xfe) | 149 if (row[i] < 0xfe) { |
| 147 return FALSE; | 150 return FALSE; |
| 151 } | |
| 148 } | 152 } |
| 149 | 153 |
| 150 return TRUE; | 154 return TRUE; |
| 151 } | 155 } |
| 152 | 156 |
