diff options
Diffstat (limited to 'src/canvas.c')
| -rw-r--r-- | src/canvas.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/canvas.c b/src/canvas.c index c185c06..a1044d5 100644 --- a/src/canvas.c +++ b/src/canvas.c @@ -8,9 +8,9 @@ #include <cairo/cairo.h> #include <pango/pangocairo.h> #include <stdarg.h> +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> -#include <stdbool.h> #ifdef IMV_BACKEND_LIBRSVG #include <librsvg/rsvg.h> @@ -204,7 +204,9 @@ static int convert_pixelformat(enum imv_pixelformat fmt) static void draw_bitmap(struct imv_canvas *canvas, struct imv_bitmap *bitmap, int bx, int by, double scale, - enum upscaling_method upscaling_method, bool cache_invalidated) + double rotation, bool mirrored, + enum upscaling_method upscaling_method, + bool cache_invalidated) { GLint viewport[4]; glGetIntegerv(GL_VIEWPORT, viewport); @@ -249,6 +251,15 @@ static void draw_bitmap(struct imv_canvas *canvas, const int top = by; const int right = left + bitmap->width * scale; const int bottom = top + bitmap->height * scale; + const int center_x = left + bitmap->width * scale / 2; + const int center_y = top + bitmap->height * scale / 2; + + glTranslated(center_x, center_y, 0); + if (mirrored) { + glScaled(-1, 1, 1); + } + glRotated(-rotation, 0, 0, 1); + glTranslated(-center_x, -center_y, 0); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); @@ -273,11 +284,14 @@ RsvgHandle *imv_image_get_svg(const struct imv_image *image); void imv_canvas_draw_image(struct imv_canvas *canvas, struct imv_image *image, int x, int y, double scale, - enum upscaling_method upscaling_method, bool cache_invalidated) + double rotation, bool mirrored, + enum upscaling_method upscaling_method, + bool cache_invalidated) { struct imv_bitmap *bitmap = imv_image_get_bitmap(image); if (bitmap) { - draw_bitmap(canvas, bitmap, x, y, scale, upscaling_method, cache_invalidated); + draw_bitmap(canvas, bitmap, x, y, scale, rotation, mirrored, + upscaling_method, cache_invalidated); return; } |