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opt: Reduce unnecessary text drawing

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DreamMaoMao 2026-06-17 08:41:22 +08:00
parent 83e5fafd65
commit 1f4f2dd5f0
10 changed files with 282 additions and 169 deletions
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60
src/draw/text-node.h
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@ -1,24 +1,50 @@
#ifndef MANGO_TEXT_NODE_H
#define MANGO_TEXT_NODE_H
#include <cairo.h>
#include <pango/pangocairo.h>
#include <wayland-server-core.h>
#include <wlr/types/wlr_scene.h>
// 自定义 wlr_buffer，仅用于包装 cairo surface，不负责 surface 的销毁
struct mango_text_buffer {
struct wlr_buffer base;
cairo_surface_t *surface;
};
struct mango_text_node {
struct wlr_scene_buffer *scene_buffer;
int logical_width;
int logical_height;
const char *font_desc;
// 外观属性
float fg_color[4]; // 文本颜色 RGBA，默认白色
float bg_color[4]; // 背景色 RGBA，默认透明
float border_color[4]; // 边框色 RGBA，默认透明
int32_t border_width; // 边框宽度（逻辑像素），<=0 则不绘制
int32_t corner_radius; // 圆角半径（逻辑像素），<0 时自动取
// min(width,height)/2 形成胶囊
int32_t padding_x; // 文本左右内边距（逻辑像素）
int32_t padding_y; // 文本上下内边距（逻辑像素）
float fg_color[4];
float bg_color[4];
float border_color[4];
int32_t border_width;
int32_t corner_radius;
int32_t padding_x, padding_y;
char *font_desc;
char *cached_text;
float cached_scale;
float cached_fg_color[4];
float cached_bg_color[4];
float cached_border_color[4];
float cached_border_width;
float cached_corner_radius;
float cached_padding_x, cached_padding_y;
char *cached_font_desc;
cairo_surface_t *surface;
struct mango_text_buffer *buffer;
int32_t surface_pixel_w, surface_pixel_h;
cairo_surface_t *measure_surface;
cairo_t *measure_cr;
PangoContext *measure_context;
PangoLayout *measure_layout;
float measure_scale;
int32_t logical_width;
int32_t logical_height;
};
typedef struct {
@ -38,15 +64,15 @@ void mango_text_node_destroy(struct mango_text_node *node);
void mango_text_node_update(struct mango_text_node *node, const char *text,
float scale);
// 外观设置接口
void mango_text_node_set_background(struct mango_text_node *node, float r,
float g, float b, float a);
void mango_text_node_set_border(struct mango_text_node *node, float r, float g,
float b, float a, float width, float radius);
void mango_text_node_set_padding(struct mango_text_node *node, float pad_x,
float pad_y);
float b, float a, int32_t width,
int32_t radius);
void mango_text_node_set_padding(struct mango_text_node *node, int32_t pad_x,
int32_t pad_y);
void mango_text_node_destroy(struct mango_text_node *node);
void mango_text_global_finish(void);
#endif