Microwindows 示例随笔

继上篇移植成功以后,需要做一个完全由PNG图片组成的程序,其中遇到一些问题.就是如果GrDrawImageFromFile尺寸参数跟图片尺寸大小不一致,导致无法显示.而且必要时要去掉BGR转RGB的代码.

下面贴一下代码,留个纪念.

#define MWINCLUDECOLORS
#include <stdio.h>
#include "nano-X.h"
#include "mwtypes.h"

static GR_WINDOW_ID wid;
static GR_GC_ID gc, gc1, gc2, gc3, gc4;
static GR_IMAGE_INFO image_info;
static GR_WINDOW_ID pixmap;
static GR_EVENT    event;

static void handleevent(GR_EVENT *);
static void doClick(void);

int main(int ac,char **av){
    if (GrOpen()<0){
        printf("Can't open graphics\n");
        exit(1);
    }

    gc = GrNewGC();
    wid = GrNewWindowEx (GR_WM_PROPS_APPWINDOW |
            GR_WM_PROPS_CAPTION |
            GR_WM_PROPS_CLOSEBOX,
            "no title",
            GR_ROOT_WINDOW_ID, 0, 0,
            1028,
            768,
            MWRGB(0xf, 0, 0));

    GrMapWindow(wid);

    gc1 = GrNewGC();
    gc2 = GrNewGC();
    gc3 = GrNewGC();
    gc4 = GrNewGC();

    GrSetGCForeground(gc1, RED);
    GrSetGCBackground(gc1, BROWN);
    GrSetGCForeground(gc2, MAGENTA);
    GrSetGCMode(gc4, GR_MODE_XOR);

    GrSelectEvents(wid, GR_EVENT_MASK_CLOSE_REQ | GR_EVENT_MASK_EXPOSURE);
    GrSelectEvents(wid, GR_EVENT_MASK_EXPOSURE | GR_EVENT_MASK_BUTTON_DOWN);

    while(1){
        GrCheckNextEvent(&event);
        handleevent(&event);
    }
    return 0;
}

static void handleevent(GR_EVENT *event){
    switch (event->type){
        case GR_EVENT_TYPE_BUTTON_DOWN:
            doClick();
            break;
        case GR_EVENT_TYPE_EXPOSURE:
            break;
        case GR_EVENT_TYPE_CLOSE_REQ:
            GrClose();
            exit(0);
            break;
        default:
            break;
    }
}

static void doClick(void){
    GrDrawImageFromFile (wid, gc, 150, -80, 804, 1024, "/mnt/nfs/k.png", 1);
    GrDrawImageFromFile (wid, gc, -10, -20, 300, 300, "/mnt/nfs/a.png", 1);
    GrDrawImageFromFile (wid, gc, 100, 600, 48, 48, "/mnt/nfs/2.png", 1);
    GrText(wid, gc, 750, 100, "fuck", 20, 0);
    printf("Good!\n");
}