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https://github.com/swaywm/sway.git
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d45623c2db
For full context, read https://gitlab.freedesktop.org/cairo/cairo/-/issues/479 TL;DR, cairo’s pc file adds `/cairo` to CFLAGS. So namespace cairo shouldn’t be used.
302 lines
10 KiB
C
302 lines
10 KiB
C
#include <stdint.h>
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#include "cairo_util.h"
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#include "log.h"
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#include "pango.h"
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#include "pool-buffer.h"
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#include "swaynag/swaynag.h"
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#include "swaynag/types.h"
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#include "wlr-layer-shell-unstable-v1-client-protocol.h"
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static uint32_t render_message(cairo_t *cairo, struct swaynag *swaynag) {
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int text_width, text_height;
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get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
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swaynag->scale, true, "%s", swaynag->message);
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int padding = swaynag->type->message_padding * swaynag->scale;
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uint32_t ideal_height = text_height + padding * 2;
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uint32_t ideal_surface_height = ideal_height / swaynag->scale;
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if (swaynag->height < ideal_surface_height) {
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return ideal_surface_height;
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}
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cairo_set_source_u32(cairo, swaynag->type->text);
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cairo_move_to(cairo, padding, (int)(ideal_height - text_height) / 2);
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pango_printf(cairo, swaynag->type->font, swaynag->scale, false,
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"%s", swaynag->message);
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return ideal_surface_height;
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}
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static void render_details_scroll_button(cairo_t *cairo,
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struct swaynag *swaynag, struct swaynag_button *button) {
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int text_width, text_height;
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get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
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swaynag->scale, true, "%s", button->text);
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int border = swaynag->type->button_border_thickness * swaynag->scale;
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int padding = swaynag->type->button_padding * swaynag->scale;
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cairo_set_source_u32(cairo, swaynag->type->details_background);
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cairo_rectangle(cairo, button->x, button->y,
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button->width, button->height);
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cairo_fill(cairo);
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cairo_set_source_u32(cairo, swaynag->type->button_background);
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cairo_rectangle(cairo, button->x + border, button->y + border,
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button->width - (border * 2), button->height - (border * 2));
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cairo_fill(cairo);
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cairo_set_source_u32(cairo, swaynag->type->button_text);
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cairo_move_to(cairo, button->x + border + padding,
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button->y + border + (button->height - text_height) / 2);
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pango_printf(cairo, swaynag->type->font, swaynag->scale, true,
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"%s", button->text);
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}
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static int get_detailed_scroll_button_width(cairo_t *cairo,
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struct swaynag *swaynag) {
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int up_width, down_width, temp_height;
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get_text_size(cairo, swaynag->type->font, &up_width, &temp_height, NULL,
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swaynag->scale, true,
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"%s", swaynag->details.button_up.text);
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get_text_size(cairo, swaynag->type->font, &down_width, &temp_height, NULL,
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swaynag->scale, true,
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"%s", swaynag->details.button_down.text);
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int text_width = up_width > down_width ? up_width : down_width;
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int border = swaynag->type->button_border_thickness * swaynag->scale;
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int padding = swaynag->type->button_padding * swaynag->scale;
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return text_width + border * 2 + padding * 2;
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}
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static uint32_t render_detailed(cairo_t *cairo, struct swaynag *swaynag,
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uint32_t y) {
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uint32_t width = swaynag->width * swaynag->scale;
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int border = swaynag->type->details_border_thickness * swaynag->scale;
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int padding = swaynag->type->message_padding * swaynag->scale;
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int decor = padding + border;
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swaynag->details.x = decor;
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swaynag->details.y = y * swaynag->scale + decor;
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swaynag->details.width = width - decor * 2;
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PangoLayout *layout = get_pango_layout(cairo, swaynag->type->font,
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swaynag->details.message, swaynag->scale, false);
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pango_layout_set_width(layout,
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(swaynag->details.width - padding * 2) * PANGO_SCALE);
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pango_layout_set_wrap(layout, PANGO_WRAP_WORD_CHAR);
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pango_layout_set_single_paragraph_mode(layout, false);
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pango_cairo_update_layout(cairo, layout);
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swaynag->details.total_lines = pango_layout_get_line_count(layout);
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PangoLayoutLine *line;
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line = pango_layout_get_line_readonly(layout, swaynag->details.offset);
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gint offset = line->start_index;
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const char *text = pango_layout_get_text(layout);
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pango_layout_set_text(layout, text + offset, strlen(text) - offset);
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int text_width, text_height;
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pango_cairo_update_layout(cairo, layout);
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pango_layout_get_pixel_size(layout, &text_width, &text_height);
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bool show_buttons = swaynag->details.offset > 0;
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int button_width = get_detailed_scroll_button_width(cairo, swaynag);
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if (show_buttons) {
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swaynag->details.width -= button_width;
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pango_layout_set_width(layout,
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(swaynag->details.width - padding * 2) * PANGO_SCALE);
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}
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uint32_t ideal_height;
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do {
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ideal_height = swaynag->details.y + text_height + decor + padding * 2;
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if (ideal_height > SWAYNAG_MAX_HEIGHT) {
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ideal_height = SWAYNAG_MAX_HEIGHT;
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if (!show_buttons) {
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show_buttons = true;
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swaynag->details.width -= button_width;
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pango_layout_set_width(layout,
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(swaynag->details.width - padding * 2) * PANGO_SCALE);
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}
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}
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swaynag->details.height = ideal_height - swaynag->details.y - decor;
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pango_layout_set_height(layout,
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(swaynag->details.height - padding * 2) * PANGO_SCALE);
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pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
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pango_cairo_update_layout(cairo, layout);
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pango_layout_get_pixel_size(layout, &text_width, &text_height);
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} while (text_height != (swaynag->details.height - padding * 2));
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swaynag->details.visible_lines = pango_layout_get_line_count(layout);
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if (show_buttons) {
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swaynag->details.button_up.x =
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swaynag->details.x + swaynag->details.width;
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swaynag->details.button_up.y = swaynag->details.y;
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swaynag->details.button_up.width = button_width;
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swaynag->details.button_up.height = swaynag->details.height / 2;
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render_details_scroll_button(cairo, swaynag,
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&swaynag->details.button_up);
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swaynag->details.button_down.x =
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swaynag->details.x + swaynag->details.width;
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swaynag->details.button_down.y =
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swaynag->details.button_up.y + swaynag->details.button_up.height;
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swaynag->details.button_down.width = button_width;
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swaynag->details.button_down.height = swaynag->details.height / 2;
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render_details_scroll_button(cairo, swaynag,
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&swaynag->details.button_down);
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}
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cairo_set_source_u32(cairo, swaynag->type->details_background);
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cairo_rectangle(cairo, swaynag->details.x, swaynag->details.y,
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swaynag->details.width, swaynag->details.height);
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cairo_fill(cairo);
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cairo_move_to(cairo, swaynag->details.x + padding,
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swaynag->details.y + padding);
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cairo_set_source_u32(cairo, swaynag->type->text);
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pango_cairo_show_layout(cairo, layout);
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g_object_unref(layout);
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return ideal_height / swaynag->scale;
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}
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static uint32_t render_button(cairo_t *cairo, struct swaynag *swaynag,
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int button_index, int *x) {
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struct swaynag_button *button = swaynag->buttons->items[button_index];
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int text_width, text_height;
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get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
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swaynag->scale, true, "%s", button->text);
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int border = swaynag->type->button_border_thickness * swaynag->scale;
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int padding = swaynag->type->button_padding * swaynag->scale;
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uint32_t ideal_height = text_height + padding * 2 + border * 2;
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uint32_t ideal_surface_height = ideal_height / swaynag->scale;
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if (swaynag->height < ideal_surface_height) {
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return ideal_surface_height;
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}
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button->x = *x - border - text_width - padding * 2 + 1;
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button->y = (int)(ideal_height - text_height) / 2 - padding + 1;
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button->width = text_width + padding * 2;
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button->height = text_height + padding * 2;
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cairo_set_source_u32(cairo, swaynag->type->border);
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cairo_rectangle(cairo, button->x - border, button->y - border,
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button->width + border * 2, button->height + border * 2);
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cairo_fill(cairo);
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cairo_set_source_u32(cairo, swaynag->type->button_background);
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cairo_rectangle(cairo, button->x, button->y,
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button->width, button->height);
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cairo_fill(cairo);
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cairo_set_source_u32(cairo, swaynag->type->button_text);
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cairo_move_to(cairo, button->x + padding, button->y + padding);
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pango_printf(cairo, swaynag->type->font, swaynag->scale, true,
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"%s", button->text);
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*x = button->x - border;
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return ideal_surface_height;
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}
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static uint32_t render_to_cairo(cairo_t *cairo, struct swaynag *swaynag) {
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uint32_t max_height = 0;
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cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
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cairo_set_source_u32(cairo, swaynag->type->background);
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cairo_paint(cairo);
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uint32_t h = render_message(cairo, swaynag);
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max_height = h > max_height ? h : max_height;
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int x = swaynag->width - swaynag->type->button_margin_right;
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x *= swaynag->scale;
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for (int i = 0; i < swaynag->buttons->length; i++) {
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h = render_button(cairo, swaynag, i, &x);
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max_height = h > max_height ? h : max_height;
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x -= swaynag->type->button_gap * swaynag->scale;
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if (i == 0) {
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x -= swaynag->type->button_gap_close * swaynag->scale;
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}
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}
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if (swaynag->details.visible) {
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h = render_detailed(cairo, swaynag, max_height);
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max_height = h > max_height ? h : max_height;
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}
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int border = swaynag->type->bar_border_thickness * swaynag->scale;
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if (max_height > swaynag->height) {
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max_height += border;
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}
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cairo_set_source_u32(cairo, swaynag->type->border_bottom);
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cairo_rectangle(cairo, 0,
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swaynag->height * swaynag->scale - border,
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swaynag->width * swaynag->scale,
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border);
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cairo_fill(cairo);
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return max_height;
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}
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void render_frame(struct swaynag *swaynag) {
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if (!swaynag->run_display) {
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return;
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}
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cairo_surface_t *recorder = cairo_recording_surface_create(
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CAIRO_CONTENT_COLOR_ALPHA, NULL);
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cairo_t *cairo = cairo_create(recorder);
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cairo_save(cairo);
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cairo_set_operator(cairo, CAIRO_OPERATOR_CLEAR);
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cairo_paint(cairo);
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cairo_restore(cairo);
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uint32_t height = render_to_cairo(cairo, swaynag);
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if (height != swaynag->height) {
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zwlr_layer_surface_v1_set_size(swaynag->layer_surface, 0, height);
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zwlr_layer_surface_v1_set_exclusive_zone(swaynag->layer_surface,
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height);
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wl_surface_commit(swaynag->surface);
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wl_display_roundtrip(swaynag->display);
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} else {
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swaynag->current_buffer = get_next_buffer(swaynag->shm,
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swaynag->buffers,
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swaynag->width * swaynag->scale,
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swaynag->height * swaynag->scale);
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if (!swaynag->current_buffer) {
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sway_log(SWAY_DEBUG, "Failed to get buffer. Skipping frame.");
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goto cleanup;
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}
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cairo_t *shm = swaynag->current_buffer->cairo;
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cairo_save(shm);
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cairo_set_operator(shm, CAIRO_OPERATOR_CLEAR);
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cairo_paint(shm);
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cairo_restore(shm);
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cairo_set_source_surface(shm, recorder, 0.0, 0.0);
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cairo_paint(shm);
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wl_surface_set_buffer_scale(swaynag->surface, swaynag->scale);
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wl_surface_attach(swaynag->surface,
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swaynag->current_buffer->buffer, 0, 0);
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wl_surface_damage(swaynag->surface, 0, 0,
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swaynag->width, swaynag->height);
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wl_surface_commit(swaynag->surface);
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wl_display_roundtrip(swaynag->display);
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}
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cleanup:
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cairo_surface_destroy(recorder);
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cairo_destroy(cairo);
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}
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