diff options
| -rw-r--r-- | fastiv-view.c | 76 |
1 files changed, 41 insertions, 35 deletions
diff --git a/fastiv-view.c b/fastiv-view.c index 3aefefd..b2bc875 100644 --- a/fastiv-view.c +++ b/fastiv-view.c @@ -165,6 +165,46 @@ get_display_dimensions(FastivView *self, int *width, int *height) *height = ceil(h * self->scale); } +static cairo_matrix_t +get_orientation_matrix(FastivIoOrientation o, double width, double height) +{ + cairo_matrix_t matrix = {}; + cairo_matrix_init_identity(&matrix); + switch (o) { + case FastivIoOrientation90: + cairo_matrix_rotate(&matrix, -M_PI_2); + cairo_matrix_translate(&matrix, -width, 0); + break; + case FastivIoOrientation180: + cairo_matrix_scale(&matrix, -1, -1); + cairo_matrix_translate(&matrix, -width, -height); + break; + case FastivIoOrientation270: + cairo_matrix_rotate(&matrix, +M_PI_2); + cairo_matrix_translate(&matrix, 0, -height); + break; + case FastivIoOrientationMirror0: + cairo_matrix_scale(&matrix, -1, +1); + cairo_matrix_translate(&matrix, -width, 0); + break; + case FastivIoOrientationMirror90: + cairo_matrix_rotate(&matrix, +M_PI_2); + cairo_matrix_scale(&matrix, -1, +1); + cairo_matrix_translate(&matrix, -width, -height); + break; + case FastivIoOrientationMirror180: + cairo_matrix_scale(&matrix, +1, -1); + cairo_matrix_translate(&matrix, 0, -height); + break; + case FastivIoOrientationMirror270: + cairo_matrix_rotate(&matrix, -M_PI_2); + cairo_matrix_scale(&matrix, -1, +1); + default: + break; + } + return matrix; +} + static void fastiv_view_get_preferred_height( GtkWidget *widget, gint *minimum, gint *natural) @@ -320,41 +360,7 @@ fastiv_view_draw(GtkWidget *widget, cairo_t *cr) cairo_scale(cr, self->scale, self->scale); cairo_set_source_surface(cr, self->frame, 0, 0); - cairo_matrix_t matrix = {}; - cairo_matrix_init_identity(&matrix); - switch (self->orientation) { - case FastivIoOrientation90: - cairo_matrix_rotate(&matrix, -M_PI_2); - cairo_matrix_translate(&matrix, -sw, 0); - break; - case FastivIoOrientation180: - cairo_matrix_scale(&matrix, -1, -1); - cairo_matrix_translate(&matrix, -sw, -sh); - break; - case FastivIoOrientation270: - cairo_matrix_rotate(&matrix, +M_PI_2); - cairo_matrix_translate(&matrix, 0, -sh); - break; - case FastivIoOrientationMirror0: - cairo_matrix_scale(&matrix, -1, +1); - cairo_matrix_translate(&matrix, -sw, 0); - break; - case FastivIoOrientationMirror90: - cairo_matrix_rotate(&matrix, +M_PI_2); - cairo_matrix_scale(&matrix, -1, +1); - cairo_matrix_translate(&matrix, -sw, -sh); - break; - case FastivIoOrientationMirror180: - cairo_matrix_scale(&matrix, +1, -1); - cairo_matrix_translate(&matrix, 0, -sh); - break; - case FastivIoOrientationMirror270: - cairo_matrix_rotate(&matrix, -M_PI_2); - cairo_matrix_scale(&matrix, -1, +1); - default: - break; - } - + cairo_matrix_t matrix = get_orientation_matrix(self->orientation, sw, sh); cairo_pattern_t *pattern = cairo_get_source(cr); cairo_pattern_set_matrix(pattern, &matrix); cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD); |