?? advanced.c
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/* File: advanced.c */ #include <X11/Xlib.h> #include <X11/Xutil.h> #include <X11/Xos.h> #include <X11/Xatom.h> #include <stdio.h> //globals for simplicity int screen_num; Colormap cmap; GC gc; GC dimgc, lightgc, panelgc; typedef struct _button { Window win; int x, y, w, h; char *label; } button; button buttons[4] = { {0, 0, 0, 0, 0, "black"}, {0, 0, 0, 0, 0, "red"}, {0, 0, 0, 0, 0, "green"}, {0, 0, 0, 0, 0, "blue"} }; void create_button(int n, Display *display, Window parent, int x, int y, int w, int h) { buttons[n].x = x; buttons[n].y = y; buttons[n].w = w; buttons[n].h = h; buttons[n].win = XCreateSimpleWindow(display, //display parent, //父窗口 x, y, w, h, //位置和大小 0, //邊界寬度 BlackPixel(display,DefaultScreen(display)), //前景色 WhitePixel(display,DefaultScreen(display)));//背景色 //選擇窗口感興趣的事件掩碼 XSelectInput(display, buttons[n].win, ExposureMask | ButtonPressMask | //按下 ButtonReleaseMask | //抬起 ButtonMotionMask | //移動 KeyPressMask | StructureNotifyMask); XMapWindow(display, buttons[n].win); } void wait_button_release(Display *display) { XEvent ev; XGrabServer(display); while(1){ XNextEvent(display, &ev); switch (ev.type) { case ButtonRelease: XUngrabServer(display); return; default: break; } } } void process_button(int n, Display *display) { XColor color; int w = buttons[n].w; int h = buttons[n].h; //border XDrawLine(display, buttons[n].win, dimgc, 0, 0, w, 0); XDrawLine(display, buttons[n].win, dimgc, 0, 1, w, 1); XDrawLine(display, buttons[n].win, dimgc, 0, 1, 0, h-1); XDrawLine(display, buttons[n].win, dimgc, 1, 1, 1, h-2); XDrawLine(display, buttons[n].win, lightgc, 0, h-1, w-1, h-1); XDrawLine(display, buttons[n].win, lightgc, 1, h-2, w-2, h-2); XDrawLine(display, buttons[n].win, lightgc, w-1, 0, w-1, h-1); XDrawLine(display, buttons[n].win, lightgc, w-2, 1, w-2, h-1); wait_button_release(display); //border XDrawLine(display, buttons[n].win, lightgc, 0, 0, w, 0); XDrawLine(display, buttons[n].win, lightgc, 0, 1, w, 1); XDrawLine(display, buttons[n].win, lightgc, 0, 1, 0, h-1); XDrawLine(display, buttons[n].win, lightgc, 1, 1, 1, h-2); XDrawLine(display, buttons[n].win, dimgc, 0, h-1, w-1, h-1); XDrawLine(display, buttons[n].win, dimgc, 1, h-2, w-2, h-2); XDrawLine(display, buttons[n].win, dimgc, w-1, 0, w-1, h-1); XDrawLine(display, buttons[n].win, dimgc, w-2, 1, w-2, h-1); //set color if(!XParseColor(display, cmap, buttons[n].label, &color)){ printf("Cannot parse color name\n"); exit(1); } if(!XAllocColor(display, cmap, &color)){ printf("Cannot allocate color\n"); exit(1); } XSetForeground(display, gc, color.pixel); } void button_flush(int n, Display *display) { int w = buttons[n].w; int h = buttons[n].h; //fill XFillRectangle(display, buttons[n].win, panelgc, 0, 0, w, h); //border XDrawLine(display, buttons[n].win, lightgc, 0, 0, w, 0); XDrawLine(display, buttons[n].win, lightgc, 0, 1, w, 1); XDrawLine(display, buttons[n].win, lightgc, 0, 1, 0, h-1); XDrawLine(display, buttons[n].win, lightgc, 1, 1, 1, h-2); XDrawLine(display, buttons[n].win, dimgc, 0, h-1, w-1, h-1); XDrawLine(display, buttons[n].win, dimgc, 1, h-2, w-2, h-2); XDrawLine(display, buttons[n].win, dimgc, w-1, 0, w-1, h-1); XDrawLine(display, buttons[n].win, dimgc, w-2, 1, w-2, h-1); //label XDrawString(display, buttons[n].win, gc, 10, 16, buttons[n].label, strlen(buttons[n].label)); } GC create_gc(Display *display, Window win, char *rgb) { XColor color; GC mygc; unsigned long valuemask = 0; XGCValues values; mygc = XCreateGC(display, win, valuemask, &values); if(!XParseColor(display, cmap, rgb, &color)){ printf("Cannot parse color name:%s\n", rgb); exit(1); } if(!XAllocColor(display, cmap, &color)){ printf("Cannot allocate color\n"); exit(1); } XSetForeground(display, mygc, color.pixel); return mygc; } int main(int argc, char **argv) { Display *display; Window win; //窗口ID Window win_draw; unsigned int width, height; //窗口尺寸 unsigned int border_width = 4; //邊界空白 unsigned int display_width, display_height;//屏幕尺寸 int i; int count; XEvent report; unsigned long valuemask = 0; XGCValues values; char *getenv(); XColor color; //draw int x1, y1, x2, y2; // 和X 服務器連接 if ( (display=XOpenDisplay(getenv("DISPLAY"))) == NULL ){ printf("Cannot connect to X server %s"); exit(-1); } //獲得缺省的 screen_num screen_num = DefaultScreen(display); //獲得屏幕的寬度和高度 display_width = DisplayWidth(display, screen_num); display_height = DisplayHeight(display, screen_num); cmap = DefaultColormap(display, screen_num); //指定所建立窗口的寬度和高度 width = display_width/2; height = display_height/2; //建立窗口 win = XCreateSimpleWindow(display, //display RootWindow(display,screen_num), //父窗口 0, 0, width, height, //位置和大小 border_width, //邊界寬度 BlackPixel(display,screen_num), //前景色 WhitePixel(display,screen_num));//背景色 //選擇窗口感興趣的事件掩碼 XSelectInput(display, win, ExposureMask | ButtonPressMask | //按下 ButtonReleaseMask | //抬起 ButtonMotionMask | //移動 KeyPressMask | StructureNotifyMask); //建立GC gc = XCreateGC(display, win, valuemask, &values); XSetLineAttributes(display, gc, 3, LineSolid, CapRound, JoinRound); panelgc = create_gc(display, win, "#C0C0C0"); dimgc = create_gc(display, win, "#666666"); lightgc = create_gc(display, win, "#F5F5F5"); //建立繪圖窗口 win_draw = XCreateSimpleWindow(display, //display win, //父窗口 10, 10, width - 140,height - 40,//位置和大小 border_width, //邊界寬度 BlackPixel(display,screen_num), //前景色 WhitePixel(display,screen_num));//背景色 //選擇窗口感興趣的事件掩碼 XSelectInput(display, win_draw, ExposureMask | ButtonPressMask | //按下 ButtonReleaseMask | //抬起 ButtonMotionMask | //移動 KeyPressMask | StructureNotifyMask); //建立按鈕窗口 for(i=0; i<4; i++) create_button(i, display, win, width - 100, i * 30 + 30, 80, 20); //顯示窗口 XMapWindow(display, win); XMapWindow(display, win_draw); //進入事件循環 while (1) { //取得隊列中的事件 XNextEvent(display, &report); switch (report.type) { //曝光事件, 窗口應重繪 case Expose: //取得最后一個曝光事件 if (report.xexpose.count != 0) break; XClearArea(display, win, 0, 0, width, height, False); for(i=0;i<4;i++) button_flush(i, display); break; //窗口尺寸改變, 重新取得窗口的寬度和高度 case ConfigureNotify: width = report.xconfigure.width; height = report.xconfigure.height; break; //鼠標左鍵開始繪圖. case ButtonPress: if(report.xbutton.button == Button1 && report.xbutton.window == win_draw){ x1 = report.xbutton.x; y1 = report.xbutton.y; XDrawPoint(display, win_draw, gc,x1,y1); } else if(report.xbutton.button == Button1 && report.xbutton.window == buttons[0].win){ process_button(0, display); } else if(report.xbutton.button == Button1 && report.xbutton.window == buttons[1].win){ process_button(1, display); } else if(report.xbutton.button == Button1 && report.xbutton.window == buttons[2].win){ process_button(2, display); } else if(report.xbutton.button == Button1 && report.xbutton.window == buttons[3].win){ process_button(3, display); } else if(report.xbutton.button == Button3){ XFreeGC(display, gc); exit(1); } break; case ButtonRelease: if(report.xbutton.button == Button1 && report.xbutton.window == win_draw){ x2 = report.xbutton.x; y2 = report.xbutton.y; XDrawLine(display, win_draw, gc, x1, y1, x2, y2); } break; case MotionNotify: if(report.xmotion.state & Button1Mask && report.xmotion.window == win_draw){ x2 = report.xmotion.x; y2 = report.xmotion.y; XDrawLine(display, win_draw, gc, x1, y1, x2, y2); x1 = x2; y1 = y2; } break; case KeyPress: XFreeGC(display, gc); exit(1); default: break; } } }?? 快捷鍵說明
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