diff options
Diffstat (limited to 'src/viewport.c')
| -rw-r--r-- | src/viewport.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/viewport.c b/src/viewport.c index c894f26..7cfb7db 100644 --- a/src/viewport.c +++ b/src/viewport.c @@ -1,9 +1,12 @@ #include "viewport.h" +#include <stdbool.h> #include <stdlib.h> struct imv_viewport { double scale; + double rotation; + bool mirrored; struct { int width, height; } window; /* window dimensions */ @@ -32,6 +35,8 @@ struct imv_viewport *imv_viewport_create(int window_width, int window_height, view->buffer.width = buffer_width; view->buffer.height = buffer_height; view->scale = 1; + view->rotation = 0; + view->mirrored = false; view->x = view->y = view->redraw = 0; view->pan_factor_x = view->pan_factor_y = 0.5; view->playing = 1; @@ -84,6 +89,20 @@ void imv_viewport_get_scale(struct imv_viewport *view, double *scale) } } +void imv_viewport_get_rotation(struct imv_viewport *view, double *rotation) +{ + if(rotation) { + *rotation = view->rotation; + } +} + +void imv_viewport_get_mirrored(struct imv_viewport *view, bool *mirrored) +{ + if(mirrored) { + *mirrored = view->mirrored; + } +} + void imv_viewport_set_default_pan_factor(struct imv_viewport *view, double pan_factor_x, double pan_factor_y) { view->pan_factor_x = pan_factor_x; @@ -177,6 +196,23 @@ void imv_viewport_zoom(struct imv_viewport *view, const struct imv_image *image, view->locked = 1; } +void imv_viewport_rotate(struct imv_viewport *view, double degrees) { + view->rotation += degrees; +} + +void imv_viewport_rotate_to(struct imv_viewport *view, double degrees) { + view->rotation = degrees; +} + +void imv_viewport_flip_h(struct imv_viewport *view) { + view->mirrored = !view->mirrored; +} + +void imv_viewport_flip_v(struct imv_viewport *view) { + view->mirrored = !view->mirrored; + view->rotation = -(180.0 - view->rotation); +} + void imv_viewport_center(struct imv_viewport *view, const struct imv_image *image) { const int image_width = imv_image_width(image); |