mirror of
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979 lines
28 KiB
C
979 lines
28 KiB
C
/**
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* File: nanovg_plus.h
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* Author: AWTK Develop Team
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* Brief: nanovg plus head file.
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*
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* Copyright (c) 2018 - 2024 Guangzhou ZHIYUAN Electronics Co.,Ltd.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* License file for more details.
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*
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*/
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/**
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* History:
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* ================================================================
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* 2021-10-27 Luo Zhiming <luozhiming@zlg.cn> created
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*
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*/
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#ifndef __NANOVG_PLUS_H__
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#define __NANOVG_PLUS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "nanovg_plus_type.h"
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#include "nvgp_darray.h"
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#ifndef NVGP_INIT_STATES
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#define NVGP_INIT_STATES 16
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#endif
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#ifndef NVGP_INIT_COMMANDS_SIZE
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#define NVGP_INIT_COMMANDS_SIZE 256
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#endif
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#ifndef NVGP_INIT_CACHE_PATHS_SIZE
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#define NVGP_INIT_CACHE_PATHS_SIZE 16
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#endif
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#ifndef NVGP_INIT_CACHE_POINTS_SIZE
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#define NVGP_INIT_CACHE_POINTS_SIZE 128
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#endif
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#ifndef NVGP_INIT_CACHE_VERTS_SIZE
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#define NVGP_INIT_CACHE_VERTS_SIZE 256
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#endif
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typedef enum _nvgp_mode_t {
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NVGP_MODE_NONE = 0,
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NVGP_MODE_CPU,
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NVGP_MODE_GPU,
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NVGP_MODE_SPECIAL,
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} nvgp_mode_t;
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typedef enum _nvgp_line_cap_t {
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NVGP_BUTT = 0,
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NVGP_ROUND,
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NVGP_SQUARE,
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} nvgp_line_cap_t;
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typedef enum _nvgp_line_join_t {
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NVGP_MITER = 0,
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NVGP_BEVEL,
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} nvgp_line_join_t;
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typedef enum _nvgp_texture_t {
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NVGP_TEXTURE_ALPHA = 1,
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NVGP_TEXTURE_RGBA = 2,
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NVGP_TEXTURE_BGRA = 4,
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NVGP_TEXTURE_RGB = 8,
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NVGP_TEXTURE_BGR = 16,
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NVGP_TEXTURE_RGB565 = 32,
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NVGP_TEXTURE_BGR565 = 64
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}nvgp_texture_t;
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typedef enum _nvgp_draw_image_type_t {
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NVGP_IMAGE_DRAW_DEFAULT = 0,
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NVGP_IMAGE_DRAW_REPEAT,
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} nvgp_draw_image_type_t;
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typedef enum _nvgp_point_flags_t {
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NVGP_PT_CORNER = 0x01,
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NVGP_PT_LEFT = 0x02,
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NVGP_PT_BEVEL = 0x04,
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NVGP_PR_INNERBEVEL = 0x08,
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} nvgp_point_flags_t;
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typedef enum _nvgp_align_t {
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// Horizontal align
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NVGP_ALIGN_LEFT = 1<<0, // Default, align text horizontally to left.
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NVGP_ALIGN_CENTER = 1<<1, // Align text horizontally to center.
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NVGP_ALIGN_RIGHT = 1<<2, // Align text horizontally to right.
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// Vertical align
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NVGP_ALIGN_TOP = 1<<3, // Align text vertically to top.
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NVGP_ALIGN_MIDDLE = 1<<4, // Align text vertically to middle.
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NVGP_ALIGN_BOTTOM = 1<<5, // Align text vertically to bottom.
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NVGP_ALIGN_BASELINE = 1<<6, // Default, align text vertically to baseline.
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} nvgp_align_t;
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typedef enum _nvgp_texture_format_t {
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NVGP_TEXTURE_FMT_ALPHA = 1,
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NVGP_TEXTURE_FMT_RGBA = 2,
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NVGP_TEXTURE_FMT_BGRA = 4,
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NVGP_TEXTURE_FMT_RGB = 8,
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NVGP_TEXTURE_FMT_BGR = 16,
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NVGP_TEXTURE_FMT_RGB565 = 32,
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NVGP_TEXTURE_FMT_BGR565 = 64
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}nvgp_texture_format_t;
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typedef struct _nvgp_vertex_t {
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float x,y,u,v;
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} nvgp_vertex_t;
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/*
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* | scale_x skew_x trans_x |
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* | skew_y scale_y trans_y |
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* | pers0 pers1 pers2 |
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*
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* xform 为 nanovg 的矩阵
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* scale_x = xform[0]
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* scale_y = xform[3]
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* skew_x = xform[2]
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* skew_y = xform[1]
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* trans_x = xform[4]
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* trans_y = xform[5]
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*/
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typedef union _nvgp_matrix_t {
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float m[3][3];
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struct {
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float scale_x, skew_x, trans_x;
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float skew_y, scale_y, trans_y;
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float pers0, pers1, pers2;
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} mat;
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} nvgp_matrix_t;
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typedef struct _nvgp_scissor_t {
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float extent[2];
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nvgp_matrix_t matrix;
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} nvgp_scissor_t;
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typedef struct _nvgp_paint_t {
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int image;
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float radius;
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float feather;
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float extent[2];
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float draw_info[2];
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float draw_image_rect[4];
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nvgp_matrix_t mat;
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nvgp_color_t inner_color;
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nvgp_color_t outer_color;
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nvgp_draw_image_type_t draw_type;
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} nvgp_paint_t;
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typedef struct _nvgp_path_t {
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uint32_t first;
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uint32_t count;
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uint32_t closed;
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uint32_t nbevel;
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uint32_t nfill;
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nvgp_vertex_t* fill;
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uint32_t nstroke;
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nvgp_vertex_t* stroke;
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uint32_t winding;
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uint32_t convex;
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} nvgp_path_t;
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typedef struct _nvgp_state_t nvgp_state_t;
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typedef struct _nvgp_context_t nvgp_context_t;
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typedef struct _nvgp_vtable_t {
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nvgp_bool_t (*clear_cache)(void* uptr);
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int (*find_texture)(void* uptr, const void* data);
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int (*create_texture)(void* uptr, int type, int w, int h, int stride, int image_flags, const unsigned char* data);
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nvgp_bool_t (*delete_texture)(void* uptr, int image);
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nvgp_bool_t (*update_texture)(void* uptr, int image, int x, int y, int w, int h, const unsigned char* data);
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nvgp_bool_t (*get_texture_size)(void* uptr, int image, int* w, int* h);
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int (*get_edge_anti_alias)(void* uptr);
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void (*end_frame)(void* uptr);
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void (*begin_frame)(void* uptr, float width, float height, float pixel_ratio);
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void (*set_line_cap)(void* uptr, int line_cap);
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void (*set_line_join)(void* uptr, int line_join);
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void (*render_cancel)(void* uptr);
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void (*render_fill)(void* uptr, nvgp_paint_t* paint, nvgp_scissor_t* scissor, float fringe, const float* bounds, const nvgp_darray_t* paths);
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void (*render_stroke)(void* uptr, nvgp_paint_t* paint, nvgp_scissor_t* scissor, float fringe, float stroke_width, const nvgp_darray_t* paths);
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void (*render_draw_text)(void* uptr, nvgp_paint_t* paint, nvgp_scissor_t* scissor, nvgp_vertex_t* verts, uint32_t nverts);
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void (*destroy)(void* uptr);
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} nvgp_vtable_t;
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/**
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* @method nvgp_create_by_vt
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* 创建矢量画布对象
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* @annotation ["constructor", "scriptable"]
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* @param {uint32_t} w 矢量画布宽
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* @param {uint32_t} h 矢量画布高
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* @param {const nvgp_vtable_t* } vt 矢量画布函数虚构表
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* @param {void* } ctx 矢量画布上下文
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*
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* @return {nvgp_context_t*} 成功返回矢量画布对象。
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*/
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nvgp_context_t* nvgp_create_by_vt(uint32_t w, uint32_t h, const nvgp_vtable_t* vt, void* ctx);
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/**
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* @method nvgp_create
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* 创建矢量画布对象
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_mode_t} nvgp_mode 矢量画布类型
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* @param {uint32_t} w 矢量画布宽
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* @param {uint32_t} h 矢量画布高
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*
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* @return {nvgp_context_t*} 成功返回矢量画布对象。
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*/
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nvgp_context_t* nvgp_create(nvgp_mode_t nvgp_mode, uint32_t w, uint32_t h);
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/**
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* @method nvgp_destroy
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* 释放矢量画布对象
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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*
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*/
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void nvgp_destroy(nvgp_context_t* ctx);
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/**
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* @method nvgp_reset_curr_state
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* 刷新当前状态
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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*
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*/
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void nvgp_reset_curr_state(nvgp_context_t* ctx);
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/**
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* @method nvgp_begin_frame_ex
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* 开始当前帧
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {float} width 矢量画布宽
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* @param {float} height 矢量画布高
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* @param {float} pixel_ratio 矢量画布屏幕比例
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* @param {nvgp_bool_t} reset 是否重新刷新当前状态
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*
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*/
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void nvgp_begin_frame_ex(nvgp_context_t *ctx, float width, float height, float pixel_ratio, nvgp_bool_t reset);
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/**
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* @method nvgp_begin_frame
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* 开始当前帧
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {float} width 矢量画布宽
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* @param {float} height 矢量画布高
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* @param {float} pixel_ratio 矢量画布屏幕比例
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*
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*/
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void nvgp_begin_frame(nvgp_context_t *ctx, float width, float height, float pixel_ratio);
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/**
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* @method nvgp_end_frame
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* 结束当前帧
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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*
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*/
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void nvgp_end_frame(nvgp_context_t *ctx);
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/**
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* @method nvgp_save
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* 保存当前状态
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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*
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*/
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void nvgp_save(nvgp_context_t *ctx);
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/**
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* @method nvgp_restore
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* 回退上一级状态
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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*
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*/
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void nvgp_restore(nvgp_context_t *ctx);
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/**
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* @method nvgp_get_image_size
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* 获取贴图宽高
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {int} image 贴图的数据长度
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* @param {int*} w 返回贴图的宽度
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* @param {int*} h 返回贴图的高度
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*
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*/
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void nvgp_get_image_size(nvgp_context_t* ctx, int image, int* w, int* h);
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/**
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* @method nvgp_create_image_rgba
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* 创建贴图（rgba格式）
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {int} w 贴图的宽度
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* @param {int} h 贴图的高度
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* @param {int} imageFlags 贴图的属性
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* @param {const unsigned char*} rgba_data 贴图的数据
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*
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* @return {int32_t} 成功返回贴图 id。
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*/
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int32_t nvgp_create_image_rgba(nvgp_context_t* ctx, int w, int h, int imageFlags, const unsigned char* rgba_data);
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/**
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* @method nvgp_update_image_rgba
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* 更新贴图数据（rgba格式）
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {int} image 贴图的数据长度
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* @param {const unsigned char*} rgba_data 贴图的数据
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*
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*/
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void nvgp_update_image_rgba(nvgp_context_t* ctx, int image, const unsigned char* rgba_data);
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/**
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* @method nvgp_create_font_mem
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* 创建新的字库
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {const char*} name 字库的名字
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* @param {unsigned char*} data 字库的数据
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* @param {int} ndata 字库的数据长度
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* @param {nvgp_bool_t} freeData 是否需要自动释放
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*
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* @return {int} 成功返回 字库 id。
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*/
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int nvgp_create_font_mem(nvgp_context_t* ctx, const char* name, unsigned char* data, int ndata, nvgp_bool_t freeData);
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/**
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* @method nvgp_find_font
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* 查找字库
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {const char*} name 查找对应名字的字库
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*
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* @return {int} 成功返回 字库 id。
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*/
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int nvgp_find_font(nvgp_context_t* ctx, const char* name);
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/**
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* @method nvgp_delete_font_by_name
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* 删除字库
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {const char*} name 删除对应名字的字库，如果为 NULL 则删除全部字库。
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*
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*/
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void nvgp_delete_font_by_name(nvgp_context_t* ctx, const char* name);
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/**
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* @method nvgp_delete_image
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* 删除贴图
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* @annotation ["constructor", "scriptable"]
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* @param {nvgp_context_t*} ctx 矢量画布上下文
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* @param {int} image 贴图 id
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*
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* @return {void} 无。
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*/
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void nvgp_delete_image(nvgp_context_t* ctx, int image);
|
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/**
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* @method nvgp_clear_cache
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* 清除矢量画布临时缓存
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* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
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* @return {nvgp_bool_t} 成功返回 TRUE。
|
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*/
|
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nvgp_bool_t nvgp_clear_cache(nvgp_context_t* ctx);
|
||
|
||
|
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/**
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* @method nvgp_begin_path
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* 开始新一条线段
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
|
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* @return {void} 无。
|
||
*/
|
||
void nvgp_begin_path(nvgp_context_t *ctx);
|
||
|
||
/**
|
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* @method nvgp_close_path
|
||
* 闭合线段
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_close_path(nvgp_context_t *ctx);
|
||
|
||
/**
|
||
* @method nvgp_move_to
|
||
* 设置线段起始点
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x x坐标
|
||
* @param {float} y y坐标
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_move_to(nvgp_context_t *ctx, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_line_to
|
||
* 设置连接点
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x x坐标
|
||
* @param {float} y y坐标
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_line_to(nvgp_context_t *ctx, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_bezier_to
|
||
* 设置三阶贝塞尔曲线路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} c1x 锚点1 x坐标
|
||
* @param {float} c1y 锚点1 y坐标
|
||
* @param {float} c2x 锚点2 x坐标
|
||
* @param {float} c2y 锚点2 y坐标
|
||
* @param {float} x 终点x坐标
|
||
* @param {float} y 终点y坐标
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_bezier_to(nvgp_context_t *ctx, float c1x, float c1y, float c2x, float c2y, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_quad_to
|
||
* 设置二阶贝塞尔曲线路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 锚点 x坐标
|
||
* @param {float} cy 锚点 y坐标
|
||
* @param {float} x x 终点x坐标
|
||
* @param {float} y y 终点y坐标
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_quad_to(nvgp_context_t *ctx, float cx, float cy, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_arc
|
||
* 设置圆弧路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 圆心 x 坐标
|
||
* @param {float} cy 圆心 y 坐标
|
||
* @param {float} r 半径
|
||
* @param {float} a0 始点角度（单位弧度）
|
||
* @param {float} a1 终点角度（单位弧度）
|
||
* @param {nvgp_bool_t} ccw 是否为顺序针
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_arc(nvgp_context_t *ctx, float cx, float cy, float r, float a0, float a1, nvgp_bool_t ccw);
|
||
|
||
/**
|
||
* @method nvgp_arc_to
|
||
* 设置圆弧路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x1 始点 x 坐标
|
||
* @param {float} y1 始点 y 坐标
|
||
* @param {float} x2 终点 x 坐标
|
||
* @param {float} y2 终点 y 坐标
|
||
* @param {float} radius 半径
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_arc_to(nvgp_context_t *ctx, float x1, float y1, float x2, float y2, float radius);
|
||
|
||
/**
|
||
* @method nvgp_rect
|
||
* 设置矩形路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x x 坐标
|
||
* @param {float} y y 坐标
|
||
* @param {float} w 宽度
|
||
* @param {float} h 高度
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_rect(nvgp_context_t *ctx, float x, float y, float w, float h);
|
||
|
||
/**
|
||
* @method nvgp_rounded_rect_varying
|
||
* 设置圆角矩形路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x x 坐标
|
||
* @param {float} y y 坐标
|
||
* @param {float} w 宽度
|
||
* @param {float} h 高度
|
||
* @param {float} rad_top_left 左上角圆角半径
|
||
* @param {float} rad_top_right 右上角圆角半径
|
||
* @param {float} rad_bottom_right 右下角圆角半径
|
||
* @param {float} rad_bottom_left 左下角圆角半径
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_rounded_rect_varying(nvgp_context_t *ctx, float x, float y, float w, float h, float rad_top_left, float rad_top_right, float rad_bottom_right, float rad_bottom_left);
|
||
|
||
/**
|
||
* @method nvgp_rounded_rect
|
||
* 设置圆角矩形路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x x 坐标
|
||
* @param {float} y y 坐标
|
||
* @param {float} w 宽度
|
||
* @param {float} h 高度
|
||
* @param {float} r 圆角半径
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_rounded_rect(nvgp_context_t *ctx, float x, float y, float w, float h, float r);
|
||
|
||
/**
|
||
* @method nvgp_ellipse
|
||
* 设置椭圆路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 圆心 x
|
||
* @param {float} cy 圆心 y
|
||
* @param {float} rx x 轴半径
|
||
* @param {float} ry y 轴半径
|
||
*
|
||
* @return {void} 成功返回 NVGP_OK。
|
||
*/
|
||
void nvgp_ellipse(nvgp_context_t *ctx, float cx, float cy, float rx, float ry);
|
||
|
||
/**
|
||
* @method nvgp_circle
|
||
* 设置圆路径
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 圆心 x
|
||
* @param {float} cy 圆心 y
|
||
* @param {float} r 半径
|
||
*
|
||
* @return {void} 成功返回 NVGP_OK。
|
||
*/
|
||
void nvgp_circle(nvgp_context_t *ctx, float cx, float cy, float r);
|
||
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_translate
|
||
* 偏移
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x 偏移 x
|
||
* @param {float} y 偏移 y
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_translate(nvgp_context_t *ctx, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_rotate
|
||
* 旋转（单位为弧度）
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} angle 旋转弧度
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_rotate(nvgp_context_t *ctx, float angle);
|
||
|
||
/**
|
||
* @method nvgp_scale
|
||
* 缩放
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x 缩放 x
|
||
* @param {float} y 缩放 y
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_scale(nvgp_context_t *ctx, float x, float y);
|
||
|
||
/**
|
||
* @method nvgp_reset_transform
|
||
* 重置当前旋转矩阵
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_reset_transform(nvgp_context_t *ctx);
|
||
|
||
/**
|
||
* @method nvgp_transform
|
||
* 叠加旋转矩阵
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} a 缩放 x
|
||
* @param {float} b 拉伸 y
|
||
* @param {float} c 拉伸 x
|
||
* @param {float} d 缩放 y
|
||
* @param {float} e 偏移 x
|
||
* @param {float} f 偏移 y
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_transform(nvgp_context_t *ctx, float a, float b, float c, float d, float e, float f);
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_scissor
|
||
* 设置当前裁剪区
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x 裁剪区 x
|
||
* @param {float} y 裁剪区 y
|
||
* @param {float} w 裁剪区 w
|
||
* @param {float} h 裁剪区 h
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_scissor(nvgp_context_t* ctx, float x, float y, float w, float h);
|
||
|
||
/**
|
||
* @method nvgp_intersect_scissor
|
||
* 叠加裁剪区，同时返回叠加后的裁剪区
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float*} x 设置裁剪区 x，同时返回新的裁剪区 x
|
||
* @param {float*} y 设置裁剪区 y, 同时返回裁剪区 y
|
||
* @param {float*} w 设置裁剪区 w，同时返回裁剪区 w
|
||
* @param {float*} h 设置裁剪区 h，同时返回裁剪区 h
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_intersect_scissor(nvgp_context_t* ctx, float* x, float* y, float* w, float* h);
|
||
|
||
/**
|
||
* @method nvgp_get_curr_clip_rect
|
||
* 获取当前裁剪区
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float*} x 返回裁剪区 x
|
||
* @param {float*} y 返回裁剪区 y
|
||
* @param {float*} w 返回裁剪区 w
|
||
* @param {float*} h 返回裁剪区 h
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_get_curr_clip_rect(nvgp_context_t* ctx, float* x, float* y, float* w, float* h);
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_text_metrics
|
||
* 设置字符串基线等信息
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float*} ascender 上边界
|
||
* @param {float*} descender 下边界
|
||
* @param {float*} lineh 基线
|
||
*
|
||
* @return {void} 无。
|
||
*/
|
||
void nvgp_text_metrics(nvgp_context_t* ctx, float* ascender, float* descender, float* lineh);
|
||
|
||
/**
|
||
* @method nvgp_text_bounds
|
||
* 获取字符串宽度
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x 坐标 x
|
||
* @param {float} y 坐标 y
|
||
* @param {const char*} string 字符串开头
|
||
* @param {const char*} end 字符串结尾
|
||
* @param {float*} bounds 返回一个字符串矩形区域（是一个长度为四的数组）
|
||
*
|
||
* @return {float} 字符宽度。
|
||
*/
|
||
float nvgp_text_bounds(nvgp_context_t* ctx, float x, float y, const char* string, const char* end, float* bounds);
|
||
|
||
/**
|
||
* @method nvgp_text
|
||
* 渲染字体
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} x 坐标 x
|
||
* @param {float} y 坐标 y
|
||
* @param {const char*} string 字符串开头
|
||
* @param {const char*} end 字符串结尾
|
||
*
|
||
* @return {float} 。
|
||
*/
|
||
float nvgp_text(nvgp_context_t* ctx, float x, float y, const char* string, const char* end);
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_set_stroke_color
|
||
* 设置线颜色
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_color_t} color 线颜色
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_stroke_color(nvgp_context_t *ctx, nvgp_color_t color);
|
||
/**
|
||
* @method nvgp_set_fill_color
|
||
* 设置填充色
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_color_t} color 填充色
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_fill_color(nvgp_context_t *ctx, nvgp_color_t color);
|
||
|
||
/**
|
||
* @method nvgp_set_shape_anti_alias
|
||
* 设置抗锯齿
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_bool_t} enabled 是否启用抗锯齿
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_shape_anti_alias(nvgp_context_t* ctx, nvgp_bool_t enabled);
|
||
|
||
/**
|
||
* @method nvgp_set_miter_limit
|
||
* 设置线斜面
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} limit limit
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_miter_limit(nvgp_context_t *ctx, float limit);
|
||
|
||
/**
|
||
* @method nvgp_set_line_cap
|
||
* 设置线帽
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_line_cap_t} cap 线帽
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_line_cap(nvgp_context_t* ctx, nvgp_line_cap_t cap);
|
||
|
||
/**
|
||
* @method nvgp_set_line_join
|
||
* 设置线连接处样式
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_line_join_t} join 线连接处样式
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_line_join(nvgp_context_t* ctx, nvgp_line_join_t join);
|
||
|
||
/**
|
||
* @method nvgp_set_stroke_width
|
||
* 设置线宽
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} stroke_width 线宽
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_stroke_width(nvgp_context_t *ctx, float stroke_width);
|
||
|
||
/**
|
||
* @method nvgp_set_global_alpha
|
||
* 设置全局透明度
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {uint8_t} alpha 全局透明度
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_global_alpha(nvgp_context_t *ctx, uint8_t alpha);
|
||
|
||
/**
|
||
* @method nvgp_text_align
|
||
* 设置字对齐
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {int32_t} align 对齐枚举
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_text_align(nvgp_context_t* ctx, int32_t align);
|
||
|
||
/**
|
||
* @method nvgp_font_face_id
|
||
* 设置字库id
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {int32_t} font_id 字库id
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_font_face_id(nvgp_context_t* ctx, int32_t font_id);
|
||
|
||
/**
|
||
* @method nvgp_set_font_size
|
||
* 设置字号（单位px）
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} font_size 字号（单位px）
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_font_size(nvgp_context_t *ctx, float font_size);
|
||
|
||
/**
|
||
* @method nvgp_set_fill_paint
|
||
* 设置填充画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_paint_t} paint 画笔
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_fill_paint(nvgp_context_t* ctx, nvgp_paint_t paint);
|
||
|
||
/**
|
||
* @method nvgp_set_stroke_paint
|
||
* 设置画线画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {nvgp_paint_t} paint 画笔
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_set_stroke_paint(nvgp_context_t* ctx, nvgp_paint_t paint);
|
||
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_linear_gradient
|
||
* 创建直线渐变画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} sx 起始坐标x
|
||
* @param {float} sy 起始坐标y
|
||
* @param {float} ex 结束坐标x
|
||
* @param {float} ey 结束坐标y
|
||
* @param {nvgp_color_t} icol 起始颜色
|
||
* @param {nvgp_color_t} ocol 结束颜色
|
||
*
|
||
* @return {nvgp_paint_t} 成功返回画笔。
|
||
*/
|
||
nvgp_paint_t nvgp_linear_gradient(nvgp_context_t* ctx, float sx, float sy, float ex, float ey, nvgp_color_t icol, nvgp_color_t ocol);
|
||
|
||
/**
|
||
* @method nvgp_radial_gradient
|
||
* 创建圆形渐变画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 渐变中心坐标
|
||
* @param {float} cy 渐变中心坐标
|
||
* @param {float} inr 内半径
|
||
* @param {float} outr 外半径
|
||
* @param {nvgp_color_t} icol 内半径颜色
|
||
* @param {nvgp_color_t} ocol 外半径颜色
|
||
*
|
||
* @return {nvgp_paint_t} 成功返回画笔。
|
||
*/
|
||
nvgp_paint_t nvgp_radial_gradient(nvgp_context_t* ctx, float cx, float cy, float inr, float outr, nvgp_color_t icol, nvgp_color_t ocol);
|
||
|
||
/**
|
||
* @method nvgp_image_pattern
|
||
* 创建贴图画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} cx 截取原图中心坐标
|
||
* @param {float} cy 截取原图中心坐标
|
||
* @param {float} w 截取原图宽度
|
||
* @param {float} h 截取原图高度
|
||
* @param {float} angle 旋转角度
|
||
* @param {int} image 贴图 id
|
||
* @param {uint8_t} alpha 透明度
|
||
*
|
||
* @return {nvgp_paint_t} 成功返回画笔。
|
||
*/
|
||
nvgp_paint_t nvgp_image_pattern(nvgp_context_t* ctx, float cx, float cy, float w, float h, float angle, int image, uint8_t alpha);
|
||
|
||
/**
|
||
* @method nvgp_image_pattern_repeat
|
||
* 创建重复贴图画笔
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
* @param {float} sx 截取原图 x 坐标
|
||
* @param {float} sy 截取原图 y 坐标
|
||
* @param {float} sw 截取原图宽度
|
||
* @param {float} sh 截取原图高度
|
||
* @param {float} dw 目标宽度
|
||
* @param {float} dh 目标高度
|
||
* @param {float} image_w 原图宽度
|
||
* @param {float} image_h 原图高度
|
||
* @param {float} angle 旋转角度
|
||
* @param {int} image 贴图 id
|
||
* @param {uint8_t} alpha 透明度
|
||
*
|
||
* @return {nvgp_paint_t} 成功返回画笔。
|
||
*/
|
||
nvgp_paint_t nvgp_image_pattern_repeat(nvgp_context_t* ctx, float sx, float sy, float sw, float sh, float dw, float dh, float image_w, float image_h, float angle, int image, uint8_t alpha);
|
||
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @method nvgp_fill
|
||
* 填充颜色
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_fill(nvgp_context_t* ctx);
|
||
|
||
/**
|
||
* @method nvgp_stroke
|
||
* 画线
|
||
* @annotation ["constructor", "scriptable"]
|
||
* @param {nvgp_context_t*} ctx 矢量画布上下文
|
||
*
|
||
* @return {nvgp_error_t} 成功返回 NVGP_OK。
|
||
*/
|
||
nvgp_error_t nvgp_stroke(nvgp_context_t* ctx);
|
||
|
||
/* private */
|
||
void* nvgp_get_vt_ctx(nvgp_context_t* ctx);
|
||
void nvgp_transform_scale(nvgp_matrix_t* mat, float sx, float sy);
|
||
void nvgp_transform_translate(nvgp_matrix_t* mat, float tx, float ty);
|
||
nvgp_matrix_t* nvgp_transform_multiply_to_t(nvgp_matrix_t* t, nvgp_matrix_t* s);
|
||
nvgp_bool_t nvgp_transform_inverse(nvgp_matrix_t* inv, const nvgp_matrix_t* t);
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
#endif
|