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Allow scaling of overlays.

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This commit is contained in:
Themaister 2013-02-03 23:35:55 +01:00
parent d13ab24756
commit 7d2e5515af
2 changed files with 46 additions and 2 deletions
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45
input/overlay.c
View File

@ -51,7 +51,12 @@ struct overlay
unsigned width;
unsigned height;
bool block_scale;
float mod_x, mod_y, mod_w, mod_h;
float x, y, w, h;
float scale;
float center_x, center_y;
bool full_screen;
};
@ -67,6 +72,34 @@ struct input_overlay
size_t size;
};
static void input_overlay_scale(struct overlay *overlay, float scale)
{
if (overlay->block_scale)
{
overlay->mod_x = overlay->x;
overlay->mod_y = overlay->y;
overlay->mod_w = overlay->w;
overlay->mod_h = overlay->h;
}
else
{
overlay->scale = scale;
overlay->mod_w = overlay->w * scale;
overlay->mod_h = overlay->h * scale;
overlay->mod_x = overlay->center_x + (overlay->x - overlay->center_x) * scale;
overlay->mod_y = overlay->center_y + (overlay->y - overlay->center_y) * scale;
}
}
void input_overlay_set_scale_factor(input_overlay_t *ol, float scale)
{
for (size_t i = 0; i < ol->size; i++)
input_overlay_scale(&ol->overlays[i], scale);
ol->iface->vertex_geom(ol->iface_data,
ol->active->mod_x, ol->active->mod_y, ol->active->mod_w, ol->active->mod_h);
}
static void input_overlay_free_overlay(struct overlay *overlay)
{
free(overlay->descs);
@ -204,6 +237,13 @@ static bool input_overlay_load_overlay(config_file_t *conf, const char *config_p
return false;
}
// Assume for now that scaling center is in the middle.
// TODO: Make this configurable.
overlay->block_scale = false;
overlay->center_x = overlay->x + 0.5f * overlay->w;
overlay->center_y = overlay->y + 0.5f * overlay->h;
return true;
}
@ -279,13 +319,14 @@ input_overlay_t *input_overlay_new(const char *overlay)
ol->active = &ol->overlays[0];
ol->iface->load(ol->iface_data, ol->active->image, ol->active->width, ol->active->height);
ol->iface->vertex_geom(ol->iface_data,
ol->active->x, ol->active->y, ol->active->w, ol->active->h);
ol->active->mod_x, ol->active->mod_y, ol->active->mod_w, ol->active->mod_h);
ol->iface->full_screen(ol->iface_data, ol->active->full_screen);
ol->iface->enable(ol->iface_data, true);
ol->enable = true;
input_overlay_set_alpha_mod(ol, g_settings.input.overlay_opacity);
input_overlay_set_scale_factor(ol, 1.0f);
return ol;
@ -353,7 +394,7 @@ void input_overlay_next(input_overlay_t *ol)
ol->iface->load(ol->iface_data, ol->active->image, ol->active->width, ol->active->height);
ol->iface->vertex_geom(ol->iface_data,
ol->active->x, ol->active->y, ol->active->w, ol->active->h);
ol->active->mod_x, ol->active->mod_y, ol->active->mod_w, ol->active->mod_h);
ol->iface->full_screen(ol->iface_data, ol->active->full_screen);
}

3
input/overlay.h
View File

@ -41,6 +41,9 @@ uint64_t input_overlay_poll(input_overlay_t *ol, int16_t norm_x, int16_t norm_y)
// The alpha factor is applied for all overlays.
void input_overlay_set_alpha_mod(input_overlay_t *ol, float mod);
// Scales the overlay by a factor of scale.
void input_overlay_set_scale_factor(input_overlay_t *ol, float scale);
void input_overlay_next(input_overlay_t *ol);
#endif