268 lines
9.3 KiB
C
268 lines
9.3 KiB
C
/*
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* File : dc.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-16 Bernard first version
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*/
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#ifndef __RTGUI_DC_H__
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#define __RTGUI_DC_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <rtgui/rtgui.h>
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#include <rtgui/font.h>
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#include <rtgui/driver.h>
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#include <rtgui/widgets/widget.h>
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#define RTGUI_DC(dc) ((struct rtgui_dc*)(dc))
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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enum rtgui_dc_type
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{
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RTGUI_DC_HW,
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RTGUI_DC_CLIENT,
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RTGUI_DC_BUFFER,
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};
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struct rtgui_dc_engine
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{
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/* interface */
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void (*draw_point)(struct rtgui_dc *dc, int x, int y);
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void (*draw_color_point)(struct rtgui_dc *dc, int x, int y, rtgui_color_t color);
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void (*draw_vline)(struct rtgui_dc *dc, int x, int y1, int y2);
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void (*draw_hline)(struct rtgui_dc *dc, int x1, int x2, int y);
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void (*fill_rect)(struct rtgui_dc *dc, rtgui_rect_t *rect);
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void (*blit_line)(struct rtgui_dc *dc, int x1, int x2, int y, rt_uint8_t *line_data);
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void (*blit)(struct rtgui_dc *dc, struct rtgui_point *dc_point, struct rtgui_dc *dest, rtgui_rect_t *rect);
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rt_bool_t (*fini)(struct rtgui_dc *dc);
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};
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/*
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* The abstract device context
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*
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* Normally, a DC is a drawable canvas, user can draw point/line/cycle etc
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* on the DC.
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*
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* There are several kinds of DC:
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* - Hardware DC;
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* - Client DC;
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* - Buffer DC;
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*/
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struct rtgui_dc
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{
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/* type of device context */
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rt_uint32_t type;
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/* dc engine */
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const struct rtgui_dc_engine *engine;
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};
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/*
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* The hardware device context
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*
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* The hardware DC is a context based on hardware device, for examle the
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* LCD device. The operations on the hardware DC are reflected to the real
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* hardware.
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*
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*/
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struct rtgui_dc_hw
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{
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struct rtgui_dc parent;
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rtgui_widget_t *owner;
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const struct rtgui_graphic_driver *hw_driver;
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};
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/**
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* The buffer dc is a device context with memory buffer.
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*
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* All the operations on this device context is reflected to the memory buffer.
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*/
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struct rtgui_dc_buffer
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{
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struct rtgui_dc parent;
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/* graphic context */
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rtgui_gc_t gc;
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/* pixel format */
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rt_uint8_t pixel_format;
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rt_uint8_t blend_mode; /* RTGUI_BLENDMODE: None/Blend/Add/Mod */
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/* width and height */
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rt_uint16_t width, height;
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/* pitch */
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rt_uint16_t pitch;
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/* pixel data */
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rt_uint8_t *pixel;
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};
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#define RTGUI_DC_FC(dc) (rtgui_dc_get_gc(RTGUI_DC(dc))->foreground)
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#define RTGUI_DC_BC(dc) (rtgui_dc_get_gc(RTGUI_DC(dc))->background)
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#define RTGUI_DC_FONT(dc) (rtgui_dc_get_gc(RTGUI_DC(dc))->font)
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#define RTGUI_DC_TEXTALIGN(dc) (rtgui_dc_get_gc(RTGUI_DC(dc))->textalign)
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/* create a buffer dc */
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struct rtgui_dc *rtgui_dc_buffer_create(int width, int height);
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struct rtgui_dc *rtgui_dc_buffer_create_pixformat(rt_uint8_t pixel_format, int w, int h);
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struct rtgui_dc *rtgui_dc_buffer_create_from_dc(struct rtgui_dc* dc);
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/* create a widget dc */
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struct rtgui_dc *rtgui_dc_widget_create(struct rtgui_widget * owner);
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/* begin and end a drawing */
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struct rtgui_dc *rtgui_dc_begin_drawing(rtgui_widget_t *owner);
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void rtgui_dc_end_drawing(struct rtgui_dc *dc);
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/* destroy a dc */
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void rtgui_dc_destory(struct rtgui_dc *dc);
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rt_uint8_t *rtgui_dc_buffer_get_pixel(struct rtgui_dc *dc);
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void rtgui_dc_draw_line(struct rtgui_dc *dc, int x1, int y1, int x2, int y2);
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void rtgui_dc_draw_rect(struct rtgui_dc *dc, struct rtgui_rect *rect);
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void rtgui_dc_fill_rect_forecolor(struct rtgui_dc *dc, struct rtgui_rect *rect);
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void rtgui_dc_draw_round_rect(struct rtgui_dc *dc, struct rtgui_rect *rect, int r);
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void rtgui_dc_fill_round_rect(struct rtgui_dc *dc, struct rtgui_rect *rect, int r);
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/** Fill a vertical gradient rect from @c1 to @c2 */
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void rtgui_dc_fill_gradient_rectv(struct rtgui_dc *dc, rtgui_rect_t *rect,
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rtgui_color_t c1, rtgui_color_t c2);
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void rtgui_dc_draw_annulus(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r1, rt_int16_t r2, rt_int16_t start, rt_int16_t end);
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void rtgui_dc_draw_pie(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r, rt_int16_t start, rt_int16_t end);
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void rtgui_dc_fill_pie(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r, rt_int16_t start, rt_int16_t end);
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void rtgui_dc_draw_text(struct rtgui_dc *dc, const char *text, struct rtgui_rect *rect);
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void rtgui_dc_draw_text_stroke(struct rtgui_dc *dc, const char *text, struct rtgui_rect *rect,
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rtgui_color_t color_stroke, rtgui_color_t color_core);
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void rtgui_dc_draw_mono_bmp(struct rtgui_dc *dc, int x, int y, int w, int h, const rt_uint8_t *data);
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void rtgui_dc_draw_byte(struct rtgui_dc *dc, int x, int y, int h, const rt_uint8_t *data);
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void rtgui_dc_draw_word(struct rtgui_dc *dc, int x, int y, int h, const rt_uint8_t *data);
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void rtgui_dc_draw_border(struct rtgui_dc *dc, rtgui_rect_t *rect, int flag);
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void rtgui_dc_draw_horizontal_line(struct rtgui_dc *dc, int x1, int x2, int y);
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void rtgui_dc_draw_vertical_line(struct rtgui_dc *dc, int x, int y1, int y2);
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void rtgui_dc_draw_focus_rect(struct rtgui_dc *dc, rtgui_rect_t *rect);
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void rtgui_dc_draw_polygon(struct rtgui_dc *dc, const int *vx, const int *vy, int count);
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void rtgui_dc_fill_polygon(struct rtgui_dc *dc, const int *vx, const int *vy, int count);
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void rtgui_dc_draw_circle(struct rtgui_dc *dc, int x, int y, int r);
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void rtgui_dc_fill_circle(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r);
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void rtgui_dc_draw_arc(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r, rt_int16_t start, rt_int16_t end);
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void rtgui_dc_draw_ellipse(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t rx, rt_int16_t ry);
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void rtgui_dc_fill_ellipse(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t rx, rt_int16_t ry);
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/* alpha blending functions */
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void rtgui_dc_draw_aa_line(struct rtgui_dc * dst,int x1,int y1,int x2,int y2);
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void rtgui_dc_draw_aa_lines(struct rtgui_dc * dst,const struct rtgui_point * points,int count);
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void rtgui_dc_blend_point(struct rtgui_dc * dst,int x,int y,enum RTGUI_BLENDMODE blendMode,rt_uint8_t r,rt_uint8_t g,rt_uint8_t b,rt_uint8_t a);
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void rtgui_dc_blend_points(struct rtgui_dc * dst,const rtgui_point_t * points,int count,enum RTGUI_BLENDMODE blendMode,rt_uint8_t r,rt_uint8_t g,rt_uint8_t b,rt_uint8_t a);
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void rtgui_dc_blend_line(struct rtgui_dc * dst,int x1,int y1,int x2,int y2,enum RTGUI_BLENDMODE blendMode,rtgui_color_t color);
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void rtgui_dc_blend_lines(struct rtgui_dc * dst,const rtgui_point_t * points,int count,enum RTGUI_BLENDMODE blendMode,rtgui_color_t color);
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void rtgui_dc_blend_fill_rect(struct rtgui_dc * dst,const rtgui_rect_t * rect,enum RTGUI_BLENDMODE blendMode,rtgui_color_t color);
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void rtgui_dc_blend_fill_rects(struct rtgui_dc * dst,const rtgui_rect_t * rects,int count,enum RTGUI_BLENDMODE blendMode,rtgui_color_t color);
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void rtgui_dc_draw_aa_circle(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t r);
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void rtgui_dc_draw_aa_ellipse(struct rtgui_dc *dc, rt_int16_t x, rt_int16_t y, rt_int16_t rx, rt_int16_t ry);
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int rtgui_dc_draw_thick_line(struct rtgui_dc * dst, rt_int16_t x1, rt_int16_t y1, rt_int16_t x2, rt_int16_t y2, rt_uint8_t width);
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/*
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* dc inline function
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*
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* Note:
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* In order to improve drawing speed, put most of common function of dc to inline
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*/
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/*
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* draw a point on dc
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*/
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rt_inline void rtgui_dc_draw_point(struct rtgui_dc *dc, int x, int y)
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{
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dc->engine->draw_point(dc, x, y);
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}
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/*
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* draw a color point on dc
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*/
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rt_inline void rtgui_dc_draw_color_point(struct rtgui_dc *dc, int x, int y, rtgui_color_t color)
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{
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dc->engine->draw_color_point(dc, x, y, color);
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}
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/*
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* draw a vertical line on dc
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*/
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rt_inline void rtgui_dc_draw_vline(struct rtgui_dc *dc, int x, int y1, int y2)
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{
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dc->engine->draw_vline(dc, x, y1, y2);
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}
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/*
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* draw a horizontal line on dc
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*/
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rt_inline void rtgui_dc_draw_hline(struct rtgui_dc *dc, int x1, int x2, int y)
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{
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dc->engine->draw_hline(dc, x1, x2, y);
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}
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/*
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* fill a rect with background color
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*/
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rt_inline void rtgui_dc_fill_rect(struct rtgui_dc *dc, struct rtgui_rect *rect)
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{
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dc->engine->fill_rect(dc, rect);
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}
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/*
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* blit a dc (x, y) on another dc(rect)
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*/
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rt_inline void rtgui_dc_blit(struct rtgui_dc *dc, struct rtgui_point *dc_point, struct rtgui_dc *dest, rtgui_rect_t *rect)
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{
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dc->engine->blit(dc, dc_point, dest, rect);
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}
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/* set gc of dc */
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void rtgui_dc_set_gc(struct rtgui_dc *dc, rtgui_gc_t *gc);
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/* get gc of dc */
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rtgui_gc_t *rtgui_dc_get_gc(struct rtgui_dc *dc);
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/* get visible status of dc */
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rt_bool_t rtgui_dc_get_visible(struct rtgui_dc *dc);
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/* get rect of dc */
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void rtgui_dc_get_rect(struct rtgui_dc *dc, rtgui_rect_t *rect);
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/* get pixel format */
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rt_uint8_t rtgui_dc_get_pixel_format(struct rtgui_dc *dc);
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/* coordinate conversion */
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void rtgui_dc_logic_to_device(struct rtgui_dc* dc, struct rtgui_point *point);
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void rtgui_dc_rect_to_device(struct rtgui_dc* dc, struct rtgui_rect* rect);
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/* dc rotation and zoom operations */
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struct rtgui_dc *rtgui_dc_shrink(struct rtgui_dc *dc, int factorx, int factory);
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struct rtgui_dc *rtgui_dc_zoom(struct rtgui_dc *dc, double zoomx, double zoomy, int smooth);
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struct rtgui_dc *rtgui_dc_rotozoom(struct rtgui_dc *dc, double angle, double zoomx, double zoomy, int smooth);
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#ifdef __cplusplus
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}
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#endif
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#endif
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