Reuse parsed PangoFontDescription

Avoids parsing the configured font each time text is rendered.

11 files changed, 52 insertions, 49 deletions

diff --git a/common/pango.c b/common/pango.c
index e8e2678d..e04bf80f 100644
--- a/common/pango.c
+++ b/common/pango.c
@@ -50,7 +50,7 @@ size_t escape_markup_text(const char *src, char *dest) {
         return length;
 }
 
-PangoLayout *get_pango_layout(cairo_t *cairo, const char *font,
+PangoLayout *get_pango_layout(cairo_t *cairo, const PangoFontDescription *desc,
                 const char *text, double scale, bool markup) {
         PangoLayout *layout = pango_cairo_create_layout(cairo);
         PangoAttrList *attrs;
@@ -73,16 +73,14 @@ PangoLayout *get_pango_layout(cairo_t *cairo, const char *font,
         }
 
         pango_attr_list_insert(attrs, pango_attr_scale_new(scale));
-        PangoFontDescription *desc = pango_font_description_from_string(font);
         pango_layout_set_font_description(layout, desc);
         pango_layout_set_single_paragraph_mode(layout, 1);
         pango_layout_set_attributes(layout, attrs);
         pango_attr_list_unref(attrs);
-        pango_font_description_free(desc);
         return layout;
 }
 
-void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
+void get_text_size(cairo_t *cairo, const PangoFontDescription *desc, int *width, int *height,
                 int *baseline, double scale, bool markup, const char *fmt, ...) {
         va_list args;
         va_start(args, fmt);
@@ -99,7 +97,7 @@ void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
         vsnprintf(buf, length, fmt, args);
         va_end(args);
 
-        PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
+        PangoLayout *layout = get_pango_layout(cairo, desc, buf, scale, markup);
         pango_cairo_update_layout(cairo, layout);
         pango_layout_get_pixel_size(layout, width, height);
         if (baseline) {
@@ -123,7 +121,7 @@ void get_text_metrics(const PangoFontDescription *description, int *height, int
         cairo_destroy(cairo);
 }
 
-void render_text(cairo_t *cairo, const char *font,
+void render_text(cairo_t *cairo, const PangoFontDescription *desc,
                 double scale, bool markup, const char *fmt, ...) {
         va_list args;
         va_start(args, fmt);
@@ -140,7 +138,7 @@ void render_text(cairo_t *cairo, const char *font,
         vsnprintf(buf, length, fmt, args);
         va_end(args);
 
-        PangoLayout *layout = get_pango_layout(cairo, font, buf, scale, markup);
+        PangoLayout *layout = get_pango_layout(cairo, desc, buf, scale, markup);
         cairo_font_options_t *fo = cairo_font_options_create();
         cairo_get_font_options(cairo, fo);
         pango_cairo_context_set_font_options(pango_layout_get_context(layout), fo);
diff --git a/include/pango.h b/include/pango.h
index 2f14d2bb..1db113c2 100644
--- a/include/pango.h
+++ b/include/pango.h
@@ -13,12 +13,12 @@
  * escaped string to dest if provided.
  */
 size_t escape_markup_text(const char *src, char *dest);
-PangoLayout *get_pango_layout(cairo_t *cairo, const char *font,
+PangoLayout *get_pango_layout(cairo_t *cairo, const PangoFontDescription *desc,
                 const char *text, double scale, bool markup);
-void get_text_size(cairo_t *cairo, const char *font, int *width, int *height,
+void get_text_size(cairo_t *cairo, const PangoFontDescription *desc, int *width, int *height,
                 int *baseline, double scale, bool markup, const char *fmt, ...);
-void get_text_metrics(const PangoFontDescription *font, int *height, int *baseline);
-void render_text(cairo_t *cairo, const char *font,
+void get_text_metrics(const PangoFontDescription *desc, int *height, int *baseline);
+void render_text(cairo_t *cairo, PangoFontDescription *desc,
                 double scale, bool markup, const char *fmt, ...);
 
 #endif
diff --git a/include/sway/config.h b/include/sway/config.h
index 8939af00..2b4aa972 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -505,7 +505,7 @@ struct sway_config {
         char *floating_scroll_right_cmd;
         enum sway_container_layout default_orientation;
         enum sway_container_layout default_layout;
-        char *font; // Use mostly for IPC.
+        char *font; // Used for IPC.
         PangoFontDescription *font_description; // Used internally for rendering and validating.
         int font_height;
         int font_baseline;
diff --git a/include/swaybar/config.h b/include/swaybar/config.h
index 4cacd21a..361acd99 100644
--- a/include/swaybar/config.h
+++ b/include/swaybar/config.h
@@ -6,6 +6,7 @@
 #include "../include/config.h"
 #include "list.h"
 #include "util.h"
+#include <pango/pangocairo.h>
 
 struct box_colors {
         uint32_t border;
@@ -28,7 +29,7 @@ struct swaybar_config {
         char *status_command;
         bool pango_markup;
         uint32_t position; // zwlr_layer_surface_v1_anchor
-        char *font;
+        PangoFontDescription *font_description;
         char *sep_symbol;
         char *mode;
         char *hidden_state;
diff --git a/include/swaynag/types.h b/include/swaynag/types.h
index 3c3b2754..18f218e0 100644
--- a/include/swaynag/types.h
+++ b/include/swaynag/types.h
@@ -4,7 +4,8 @@
 struct swaynag_type {
         char *name;
 
-        char *font;
+        char *font; // Used for debugging.
+        PangoFontDescription *font_description;
         char *output;
         uint32_t anchors;
         int32_t layer; // enum zwlr_layer_shell_v1_layer or -1 if unset
diff --git a/sway/tree/container.c b/sway/tree/container.c
index 09766ce5..04ef965f 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -520,7 +520,7 @@ static void render_titlebar_text_texture(struct sway_output *output,
                         to_cairo_subpixel_order(output->wlr_output->subpixel));
         }
         cairo_set_font_options(c, fo);
-        get_text_size(c, config->font, &width, NULL, &baseline, scale,
+        get_text_size(c, config->font_description, &width, NULL, &baseline, scale,
                         config->pango_markup, "%s", text);
         cairo_surface_destroy(dummy_surface);
         cairo_destroy(c);
@@ -554,7 +554,7 @@ static void render_titlebar_text_texture(struct sway_output *output,
                         class->text[2], class->text[3]);
         cairo_move_to(cairo, 0, config->font_baseline * scale - baseline);
 
-        render_text(cairo, config->font, scale, pango_markup, "%s", text);
+        render_text(cairo, config->font_description, scale, pango_markup, "%s", text);
 
         cairo_surface_flush(surface);
         unsigned char *data = cairo_image_surface_get_data(surface);
diff --git a/swaybar/config.c b/swaybar/config.c
index abedaec0..5e828773 100644
--- a/swaybar/config.c
+++ b/swaybar/config.c
@@ -26,7 +26,7 @@ struct swaybar_config *init_config(void) {
         config->status_command = NULL;
         config->pango_markup = false;
         config->position = parse_position("bottom");
-        config->font = strdup("monospace 10");
+        config->font_description = pango_font_description_from_string("monospace 10");
         config->mode = strdup("dock");
         config->hidden_state = strdup("hide");
         config->sep_symbol = NULL;
@@ -105,7 +105,7 @@ void free_tray_binding(struct tray_binding *binding) {
 
 void free_config(struct swaybar_config *config) {
         free(config->status_command);
-        free(config->font);
+        pango_font_description_free(config->font_description);
         free(config->mode);
         free(config->hidden_state);
         free(config->sep_symbol);
diff --git a/swaybar/ipc.c b/swaybar/ipc.c
index 2cb235bf..9d81a9fb 100644
--- a/swaybar/ipc.c
+++ b/swaybar/ipc.c
@@ -147,8 +147,10 @@ static bool ipc_parse_config(
 
         json_object *font = json_object_object_get(bar_config, "font");
         if (font) {
-                free(config->font);
-                config->font = parse_font(json_object_get_string(font));
+                pango_font_description_free(config->font_description);
+                char *font_value = parse_font(json_object_get_string(font));
+                config->font_description = pango_font_description_from_string(font_value);
+                free(font_value);
         }
 
         json_object *gaps = json_object_object_get(bar_config, "gaps");
@@ -485,8 +487,7 @@ static bool handle_barconfig_update(struct swaybar *bar, const char *payload,
                         destroy_layer_surface(output);
                         wl_list_remove(&output->link);
                         wl_list_insert(&bar->unused_outputs, &output->link);
-                } else if (!oldcfg->font || !newcfg->font ||
-                                strcmp(oldcfg->font, newcfg->font) != 0) {
+                } else if (!pango_font_description_equal(oldcfg->font_description, newcfg->font_description)) {
                         output->height = 0;  // force update height
                 }
         }
diff --git a/swaybar/render.c b/swaybar/render.c
index 7e2f97b7..a878805e 100644
--- a/swaybar/render.c
+++ b/swaybar/render.c
@@ -62,7 +62,7 @@ static uint32_t render_status_line_error(struct render_context *ctx, double *x)
         int margin = 3;
         double ws_vertical_padding = output->bar->config->status_padding;
 
-        char *font = output->bar->config->font;
+        PangoFontDescription *font = output->bar->config->font_description;
         int text_width, text_height;
         get_text_size(cairo, font, &text_width, &text_height, NULL,
                         1, false, "%s", error);
@@ -97,7 +97,7 @@ static uint32_t render_status_line_text(struct render_context *ctx, double *x) {
         cairo_set_source_u32(cairo, fontcolor);
 
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL,
                         1, config->pango_markup, "%s", text);
 
         double ws_vertical_padding = config->status_padding;
@@ -115,7 +115,7 @@ static uint32_t render_status_line_text(struct render_context *ctx, double *x) {
         double text_y = height / 2.0 - text_height / 2.0;
         cairo_move_to(cairo, *x, (int)floor(text_y));
         choose_text_aa_mode(ctx, fontcolor);
-        render_text(cairo, config->font, 1, config->pango_markup, "%s", text);
+        render_text(cairo, config->font_description, 1, config->pango_markup, "%s", text);
         *x -= margin;
         return output->height;
 }
@@ -190,7 +190,7 @@ static uint32_t render_status_block(struct render_context *ctx,
         struct swaybar_output *output = ctx->output;
         struct swaybar_config *config = output->bar->config;
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL, 1,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL, 1,
                         block->markup, "%s", text);
 
         int margin = 3;
@@ -199,7 +199,7 @@ static uint32_t render_status_block(struct render_context *ctx,
         int width = text_width;
         if (block->min_width_str) {
                 int w;
-                get_text_size(cairo, config->font, &w, NULL, NULL, 1, block->markup,
+                get_text_size(cairo, config->font_description, &w, NULL, NULL, 1, block->markup,
                                 "%s", block->min_width_str);
                 block->min_width = w;
         }
@@ -229,7 +229,7 @@ static uint32_t render_status_block(struct render_context *ctx,
         int sep_block_width = block->separator_block_width;
         if (!edge) {
                 if (config->sep_symbol) {
-                        get_text_size(cairo, config->font, &sep_width, &sep_height, NULL,
+                        get_text_size(cairo, config->font_description, &sep_width, &sep_height, NULL,
                                         1, false, "%s", config->sep_symbol);
                         uint32_t _ideal_height = sep_height + ws_vertical_padding * 2;
                         uint32_t _ideal_surface_height = _ideal_height;
@@ -307,7 +307,7 @@ static uint32_t render_status_block(struct render_context *ctx,
         color = block->urgent ? config->colors.urgent_workspace.text : color;
         cairo_set_source_u32(cairo, color);
         choose_text_aa_mode(ctx, color);
-        render_text(cairo, config->font, 1, block->markup, "%s", text);
+        render_text(cairo, config->font_description, 1, block->markup, "%s", text);
         x_pos += width;
 
         if (block->border_set || block->urgent) {
@@ -331,7 +331,7 @@ static uint32_t render_status_block(struct render_context *ctx,
                         double sep_y = height / 2.0 - sep_height / 2.0;
                         cairo_move_to(cairo, offset, (int)floor(sep_y));
                         choose_text_aa_mode(ctx, color);
-                        render_text(cairo, config->font, 1, false,
+                        render_text(cairo, config->font_description, 1, false,
                                         "%s", config->sep_symbol);
                 } else {
                         cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
@@ -354,7 +354,7 @@ static void predict_status_block_pos(cairo_t *cairo,
         struct swaybar_config *config = output->bar->config;
 
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL, 1,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL, 1,
                         block->markup, "%s", block->full_text);
 
         int margin = 3;
@@ -364,7 +364,7 @@ static void predict_status_block_pos(cairo_t *cairo,
 
         if (block->min_width_str) {
                 int w;
-                get_text_size(cairo, config->font, &w, NULL, NULL,
+                get_text_size(cairo, config->font_description, &w, NULL, NULL,
                                 1, block->markup, "%s", block->min_width_str);
                 block->min_width = w;
         }
@@ -391,7 +391,7 @@ static void predict_status_block_pos(cairo_t *cairo,
         int sep_block_width = block->separator_block_width;
         if (!edge) {
                 if (config->sep_symbol) {
-                        get_text_size(cairo, config->font, &sep_width, &sep_height, NULL,
+                        get_text_size(cairo, config->font_description, &sep_width, &sep_height, NULL,
                                         1, false, "%s", config->sep_symbol);
                         uint32_t _ideal_height = sep_height + ws_vertical_padding * 2;
                         uint32_t _ideal_surface_height = _ideal_height;
@@ -426,7 +426,7 @@ static uint32_t predict_workspace_button_length(cairo_t *cairo,
         struct swaybar_config *config = output->bar->config;
 
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL, 1,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL, 1,
                         config->pango_markup, "%s", ws->label);
 
         int ws_vertical_padding = WS_VERTICAL_PADDING;
@@ -474,7 +474,7 @@ static uint32_t predict_binding_mode_indicator_length(cairo_t *cairo,
         }
 
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL,
                         1, output->bar->mode_pango_markup,
                         "%s", mode);
 
@@ -551,7 +551,7 @@ static uint32_t render_binding_mode_indicator(struct render_context *ctx,
         cairo_t *cairo = ctx->cairo;
         struct swaybar_config *config = output->bar->config;
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL,
                         1, output->bar->mode_pango_markup,
                         "%s", mode);
 
@@ -592,7 +592,7 @@ static uint32_t render_binding_mode_indicator(struct render_context *ctx,
         cairo_set_source_u32(cairo, config->colors.binding_mode.text);
         cairo_move_to(cairo, x + width / 2 - text_width / 2, (int)floor(text_y));
         choose_text_aa_mode(ctx, config->colors.binding_mode.text);
-        render_text(cairo, config->font, 1, output->bar->mode_pango_markup,
+        render_text(cairo, config->font_description, 1, output->bar->mode_pango_markup,
                         "%s", mode);
         return output->height;
 }
@@ -626,7 +626,7 @@ static uint32_t render_workspace_button(struct render_context *ctx,
 
         cairo_t *cairo = ctx->cairo;
         int text_width, text_height;
-        get_text_size(cairo, config->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, config->font_description, &text_width, &text_height, NULL,
                         1, config->pango_markup, "%s", ws->label);
 
         int ws_vertical_padding = WS_VERTICAL_PADDING;
@@ -666,7 +666,7 @@ static uint32_t render_workspace_button(struct render_context *ctx,
         cairo_set_source_u32(cairo, box_colors.text);
         cairo_move_to(cairo, *x + width / 2 - text_width / 2, (int)floor(text_y));
         choose_text_aa_mode(ctx, box_colors.text);
-        render_text(cairo, config->font, 1, config->pango_markup,
+        render_text(cairo, config->font_description, 1, config->pango_markup,
                         "%s", ws->label);
 
         struct swaybar_hotspot *hotspot = calloc(1, sizeof(struct swaybar_hotspot));
@@ -699,7 +699,7 @@ static uint32_t render_to_cairo(struct render_context *ctx) {
         cairo_paint(cairo);
 
         int th;
-        get_text_size(cairo, config->font, NULL, &th, NULL, 1, false, "");
+        get_text_size(cairo, config->font_description, NULL, &th, NULL, 1, false, "");
         uint32_t max_height = (th + WS_VERTICAL_PADDING * 4);
         /*
          * Each render_* function takes the actual height of the bar, and returns
diff --git a/swaynag/config.c b/swaynag/config.c
index 9aeec3c2..a0bf3197 100644
--- a/swaynag/config.c
+++ b/swaynag/config.c
@@ -227,7 +227,9 @@ int swaynag_parse_options(int argc, char **argv, struct swaynag *swaynag,
                 case 'f': // Font
                         if (type) {
                                 free(type->font);
+                                pango_font_description_free(type->font_description);
                                 type->font = strdup(optarg);
+                                type->font_description = pango_font_description_from_string(type->font);
                         }
                         break;
                 case 'l': // Detailed Message
diff --git a/swaynag/render.c b/swaynag/render.c
index d72f42c2..21b03289 100644
--- a/swaynag/render.c
+++ b/swaynag/render.c
@@ -9,7 +9,7 @@
 
 static uint32_t render_message(cairo_t *cairo, struct swaynag *swaynag) {
         int text_width, text_height;
-        get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, swaynag->type->font_description, &text_width, &text_height, NULL,
                         1, true, "%s", swaynag->message);
 
         int padding = swaynag->type->message_padding;
@@ -22,7 +22,7 @@ static uint32_t render_message(cairo_t *cairo, struct swaynag *swaynag) {
 
         cairo_set_source_u32(cairo, swaynag->type->text);
         cairo_move_to(cairo, padding, (int)(ideal_height - text_height) / 2);
-        render_text(cairo, swaynag->type->font, 1, false,
+        render_text(cairo, swaynag->type->font_description, 1, false,
                         "%s", swaynag->message);
 
         return ideal_surface_height;
@@ -31,7 +31,7 @@ static uint32_t render_message(cairo_t *cairo, struct swaynag *swaynag) {
 static void render_details_scroll_button(cairo_t *cairo,
                 struct swaynag *swaynag, struct swaynag_button *button) {
         int text_width, text_height;
-        get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, swaynag->type->font_description, &text_width, &text_height, NULL,
                         1, true, "%s", button->text);
 
         int border = swaynag->type->button_border_thickness;
@@ -50,17 +50,17 @@ static void render_details_scroll_button(cairo_t *cairo,
         cairo_set_source_u32(cairo, swaynag->type->button_text);
         cairo_move_to(cairo, button->x + border + padding,
                         button->y + border + (button->height - text_height) / 2);
-        render_text(cairo, swaynag->type->font, 1, true,
+        render_text(cairo, swaynag->type->font_description, 1, true,
                         "%s", button->text);
 }
 
 static int get_detailed_scroll_button_width(cairo_t *cairo,
                 struct swaynag *swaynag) {
         int up_width, down_width, temp_height;
-        get_text_size(cairo, swaynag->type->font, &up_width, &temp_height, NULL,
+        get_text_size(cairo, swaynag->type->font_description, &up_width, &temp_height, NULL,
                         1, true,
                         "%s", swaynag->details.button_up.text);
-        get_text_size(cairo, swaynag->type->font, &down_width, &temp_height, NULL,
+        get_text_size(cairo, swaynag->type->font_description, &down_width, &temp_height, NULL,
                         1, true,
                         "%s", swaynag->details.button_down.text);
 
@@ -83,7 +83,7 @@ static uint32_t render_detailed(cairo_t *cairo, struct swaynag *swaynag,
         swaynag->details.y = y + decor;
         swaynag->details.width = width - decor * 2;
 
-        PangoLayout *layout = get_pango_layout(cairo, swaynag->type->font,
+        PangoLayout *layout = get_pango_layout(cairo, swaynag->type->font_description,
                         swaynag->details.message, 1, false);
         pango_layout_set_width(layout,
                         (swaynag->details.width - padding * 2) * PANGO_SCALE);
@@ -172,7 +172,7 @@ static uint32_t render_button(cairo_t *cairo, struct swaynag *swaynag,
         struct swaynag_button *button = swaynag->buttons->items[button_index];
 
         int text_width, text_height;
-        get_text_size(cairo, swaynag->type->font, &text_width, &text_height, NULL,
+        get_text_size(cairo, swaynag->type->font_description, &text_width, &text_height, NULL,
                         1, true, "%s", button->text);
 
         int border = swaynag->type->button_border_thickness;
@@ -201,7 +201,7 @@ static uint32_t render_button(cairo_t *cairo, struct swaynag *swaynag,
 
         cairo_set_source_u32(cairo, swaynag->type->button_text);
         cairo_move_to(cairo, button->x + padding, button->y + padding);
-        render_text(cairo, swaynag->type->font, 1, true,
+        render_text(cairo, swaynag->type->font_description, 1, true,
                         "%s", button->text);
 
         *x = button->x - border;