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Add functions to render pages of items

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adnano 2024-02-26 16:31:04 -05:00
parent 628a5d82ee
commit c6025455ec
1 changed files with 34 additions and 31 deletions
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65
main.c
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@ -316,6 +316,7 @@ static int render_text(struct menu *menu, cairo_t *cairo, const char *str,
return width;
}
// Renders a single menu item horizontally.
static int render_horizontal_item(struct menu *menu, cairo_t *cairo, struct item *item, int x) {
uint32_t bg_color = menu->sel == item ? menu->selectionbg : menu->background;
uint32_t fg_color = menu->sel == item ? menu->selectionfg : menu->foreground;
@ -324,13 +325,41 @@ static int render_horizontal_item(struct menu *menu, cairo_t *cairo, struct item
bg_color, fg_color, menu->padding, menu->padding);
}
static void render_vertical_item(struct menu *menu, cairo_t *cairo, struct item *item, int x, int y) {
// Renders a single menu item vertically.
static int render_vertical_item(struct menu *menu, cairo_t *cairo, struct item *item, int x, int y) {
uint32_t bg_color = menu->sel == item ? menu->selectionbg : menu->background;
uint32_t fg_color = menu->sel == item ? menu->selectionfg : menu->foreground;
render_text(menu, cairo, item->text, x, y, menu->width - x,
bg_color, fg_color, menu->padding, 0);
return;
return menu->line_height;
}
// Renders a page of menu items horizontally.
static void render_horizontal_page(struct menu *menu, cairo_t *cairo, struct page *page) {
int x = menu->promptw + menu->inputw + menu->left_arrow;
for (struct item *item = page->first; item != page->last->next_match; item = item->next_match) {
x += render_horizontal_item(menu, cairo, item, x);
}
// Draw left and right scroll indicators if necessary
if (page->prev) {
cairo_move_to(cairo, menu->promptw + menu->inputw + menu->padding, 0);
pango_printf(cairo, menu->font, 1, "<");
}
if (page->next) {
cairo_move_to(cairo, menu->width - menu->right_arrow + menu->padding, 0);
pango_printf(cairo, menu->font, 1, ">");
}
}
// Renders a page of menu items vertically.
static void render_vertical_page(struct menu *menu, cairo_t *cairo, struct page *page) {
int x = menu->promptw;
int y = menu->line_height;
for (struct item *item = page->first; item != page->last->next_match; item = item->next_match) {
y += render_vertical_item(menu, cairo, item, x, y);
}
}
static void render_to_cairo(struct menu *menu, cairo_t *cairo) {
@ -364,40 +393,14 @@ static void render_to_cairo(struct menu *menu, cairo_t *cairo) {
cairo_fill(cairo);
}
if (!menu->matches) {
if (!menu->sel) {
return;
}
// Draw matches
if (menu->vertical) {
// Draw matches vertically
int y = menu->line_height;
struct item *item;
for (item = menu->sel->page->first; item != menu->sel->page->last->next_match; item = item->next_match) {
render_vertical_item(menu, cairo, item, x, y);
y += menu->line_height;
}
render_vertical_page(menu, cairo, menu->sel->page);
} else {
// Leave room for input and left arrow
x += menu->inputw + menu->left_arrow;
// Draw matches horizontally
struct item *item;
for (item = menu->sel->page->first; item != menu->sel->page->last->next_match; item = item->next_match) {
x += render_horizontal_item(menu, cairo, item, x);
}
// Draw left scroll indicator if necessary
if (menu->sel->page->prev) {
cairo_move_to(cairo, menu->promptw + menu->inputw + menu->padding, 0);
pango_printf(cairo, menu->font, 1, "<");
}
// Draw right scroll indicator if necessary
if (menu->sel->page->next) {
cairo_move_to(cairo, menu->width - menu->right_arrow + menu->padding, 0);
pango_printf(cairo, menu->font, 1, ">");
}
render_horizontal_page(menu, cairo, menu->sel->page);
}
}