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sync RTGUI with github(https://github.com/RT-Thread/RTGUI)
a8dac7ed473f381b7042cf9d14028488192624c5 As always, full log is in GitHub. git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2276 bbd45198-f89e-11dd-88c7-29a3b14d5316
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dzzxzz@gmail.com
184
components/rtgui/widgets/plot.c
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184
components/rtgui/widgets/plot.c
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/*
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* File : plot.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2012, 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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* 2012-09-03 Grissiom first version
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*/
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#include <rtgui/rtgui_system.h>
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#include <rtgui/dc.h>
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#include <rtgui/widgets/plot.h>
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static void _rtgui_plot_constructor(struct rtgui_plot *plot)
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{
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plot->base_point.x = plot->base_point.y = 0;
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plot->curve_container.curve = RT_NULL;
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plot->curve_container.next = RT_NULL;
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/* init widget and set event handler */
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rtgui_object_set_event_handler(RTGUI_OBJECT(plot), rtgui_plot_event_handler);
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}
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static void _free_curve_container_recursive(struct rtgui_plot_curve_container *cnt)
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{
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if (!cnt)
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return;
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_free_curve_container_recursive(cnt->next);
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rtgui_free(cnt);
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}
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static void _rtgui_plot_destructor(struct rtgui_plot *plot)
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{
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_free_curve_container_recursive(plot->curve_container.next);
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}
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DEFINE_CLASS_TYPE(plot, "plot",
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RTGUI_WIDGET_TYPE,
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_rtgui_plot_constructor,
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_rtgui_plot_destructor,
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sizeof(struct rtgui_plot));
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struct rtgui_plot *rtgui_plot_create(struct rtgui_plot_curve *curve)
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{
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struct rtgui_plot *plot;
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plot = (struct rtgui_plot *)rtgui_widget_create(RTGUI_PLOT_TYPE);
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plot->curve_container.curve = curve;
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return plot;
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}
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RTM_EXPORT(rtgui_plot_create);
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void rtgui_plot_destroy(struct rtgui_plot *plot)
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{
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rtgui_widget_destroy(RTGUI_WIDGET(plot));
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}
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RTM_EXPORT(rtgui_plot_destroy);
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void rtgui_plot_set_base_point(struct rtgui_plot *plot, rt_uint16_t x, rt_uint16_t y)
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{
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plot->base_point.x = x;
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plot->base_point.y = y;
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}
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RTM_EXPORT(rtgui_plot_set_base_point);
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void rtgui_plot_append_curve(struct rtgui_plot *plot, struct rtgui_plot_curve *curve)
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{
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struct rtgui_plot_curve_container *cur_cnt, *next_cnt;
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RT_ASSERT(plot);
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next_cnt = rtgui_malloc(sizeof(*next_cnt));
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next_cnt->curve = curve;
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next_cnt->next = RT_NULL;
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cur_cnt = &plot->curve_container;
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while (cur_cnt->next)
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{
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cur_cnt = cur_cnt->next;
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}
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cur_cnt->next = next_cnt;
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}
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RTM_EXPORT(rtgui_plot_append_curve);
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static void _rtgui_plot_curve_onpaint(
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struct rtgui_dc *dc,
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struct rtgui_plot_curve *curve,
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struct rtgui_point base)
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{
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struct rtgui_rect rect;
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rt_uint16_t height;
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int last_x, last_y;
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rtgui_color_t old_color;
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rtgui_dc_get_rect(dc, &rect);
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height = rtgui_rect_height(rect);
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old_color = RTGUI_DC_FC(dc);
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RTGUI_DC_FC(dc) = curve->color;
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if (curve->x_data)
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{
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rt_size_t i;
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last_x = curve->x_data[0] + base.x;
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last_y = height - curve->y_data[0] - base.y;
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for (i = 1; i < curve->length; i++)
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{
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int cur_x = curve->x_data[i] + base.x;
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int cur_y = height - curve->y_data[i] - base.y;
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rtgui_dc_draw_line(dc,
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last_x, last_y,
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cur_x, cur_y);
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last_x = cur_x;
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last_y = cur_y;
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}
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}
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else
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{
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rt_size_t i;
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last_x = 0 + base.x;
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last_y = height - curve->y_data[0] - base.y;
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for (i = 1; i < curve->length; i++)
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{
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int cur_x = i + base.x;
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int cur_y = height - curve->y_data[i] - base.y;
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rtgui_dc_draw_line(dc,
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last_x, last_y,
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cur_x, cur_y);
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last_x = cur_x;
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last_y = cur_y;
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}
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}
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RTGUI_DC_FC(dc) = old_color;
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}
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static void _rtgui_plot_onpaint(struct rtgui_object *object, struct rtgui_event *event)
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{
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struct rtgui_dc *dc;
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struct rtgui_rect rect;
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struct rtgui_plot *plot = RTGUI_PLOT(object);
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struct rtgui_plot_curve_container *cnt;
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(plot));
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if (dc == RT_NULL)
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return;
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rtgui_widget_get_rect(RTGUI_WIDGET(object), &rect);
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rtgui_dc_fill_rect(dc, &rect);
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for (cnt = &plot->curve_container; cnt; cnt = cnt->next)
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{
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_rtgui_plot_curve_onpaint(dc, cnt->curve, plot->base_point);
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}
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rtgui_dc_end_drawing(dc);
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}
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rt_bool_t rtgui_plot_event_handler(struct rtgui_object *object, struct rtgui_event *event)
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{
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struct rtgui_plot *plot;
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RTGUI_WIDGET_EVENT_HANDLER_PREPARE;
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plot = RTGUI_PLOT(object);
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switch (event->type)
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{
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case RTGUI_EVENT_PAINT:
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_rtgui_plot_onpaint(object, event);
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break;
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default:
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return rtgui_widget_event_handler(object, event);
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}
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return RT_FALSE;
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}
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RTM_EXPORT(rtgui_plot_event_handler);
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