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Initial code to show window size in cells while resizing

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Kovid Goyal
2019-03-03 08:11:43 +05:30
parent bb97c589c1
commit 11522ccc92
11 changed files with 101 additions and 19 deletions
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22
kitty/graphics.c
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@@ -522,6 +522,24 @@ cmp_by_zindex_and_image(const void *a_, const void *b_) {
return ans;
}
static inline void
set_vertex_data(ImageRenderData *rd, const ImageRef *ref, const ImageRect *source_rect) {
#define R(n, a, b) rd->vertices[n*4] = ref->src_rect.a; rd->vertices[n*4 + 1] = ref->src_rect.b; rd->vertices[n*4 + 2] = source_rect->a; rd->vertices[n*4 + 3] = source_rect->b;
R(0, right, top); R(1, right, bottom); R(2, left, bottom); R(3, left, top);
#undef R
}
void
gpu_data_for_centered_image(ImageRenderData *ans, unsigned int screen_width_px, unsigned int screen_height_px, unsigned int width, unsigned int height) {
static const ImageRef source_rect = { .src_rect = { .left=0, .top=0, .bottom=1, .right=1 }};
const ImageRef *ref = &source_rect;
float width_frac = width / (float)screen_width_px, height_frac = height / (float)screen_height_px;
float hmargin = MAX(0, 2 - width_frac) / 2;
float vmargin = MAX(0, 2 - height_frac) / 2;
const ImageRect r = { .left = -1 + hmargin, .right = -1 + hmargin + width_frac, .top = -1 + vmargin, .bottom = -1 + vmargin + height_frac };
set_vertex_data(ans, ref, &r);
}
bool
grman_update_layers(GraphicsManager *self, unsigned int scrolled_by, float screen_left, float screen_top, float dx, float dy, unsigned int num_cols, unsigned int num_rows, CellPixelSize cell) {
if (self->last_scrolled_by != scrolled_by) self->layers_dirty = true;
@@ -553,9 +571,7 @@ grman_update_layers(GraphicsManager *self, unsigned int scrolled_by, float scree
if (ref->z_index < 0) self->num_of_negative_refs++; else self->num_of_positive_refs++;
ensure_space_for(self, render_data, ImageRenderData, self->count + 1, capacity, 64, true);
ImageRenderData *rd = self->render_data + self->count;
#define R(n, a, b) rd->vertices[n*4] = ref->src_rect.a; rd->vertices[n*4 + 1] = ref->src_rect.b; rd->vertices[n*4 + 2] = r.a; rd->vertices[n*4 + 3] = r.b;
R(0, right, top); R(1, right, bottom); R(2, left, bottom); R(3, left, top);
#undef R
set_vertex_data(rd, ref, &r);
self->count++;
rd->z_index = ref->z_index; rd->image_id = img->internal_id;
rd->texture_id = img->texture_id;