gdiopt.c

这是ARM嵌入式系统的实验教程中的MINIGUI的实验源代码！

    pt [2].x = 80;
    pt [2].y = 80;
    pt [3].x = 20;
    pt [3].y = 80;
    pt [4].x = 20;
    pt [4].y = 20;
    PolyLineEx (hdc, pt, 5);

    SetPenWidth (hdc, 20);
    SetPenColor (hdc, PIXEL_red);
    SetPenCapStyle (hdc, PT_CAP_ROUND);

    LineEx (hdc, 80, 80, 400, 300);

    SetPenColor (hdc, PIXEL_blue);

    ArcEx (hdc, 100, 100, 200, 300, 180*64, 180*64);

    SetBrushType (hdc, BT_SOLID);
    SetBrushColor (hdc, PIXEL_green);

    FillArcEx (hdc, 100, 0, 200, 100, 0, 120*64);

    SetBrushType (hdc, BT_TILED);
    SetBrushInfo (hdc, bitmap, &my_stipple);

    SetBrushOrigin (hdc, 100, 100);
    FillArcEx (hdc, 100, 100, 200, 100, 0, 270*64);

    SetBrushType (hdc, BT_STIPPLED);
    FillArcEx (hdc, 100, 300, 200, 100, 0, 360*64);

    SetPenType (hdc, PT_DOUBLE_DASH);
    SetPenDashes (hdc, 0, (const unsigned char*)"\20\40", 2);
    SetPenCapStyle (hdc, PT_CAP_BUTT);
    SetPenWidth (hdc, 20);

    LineEx (hdc, 500, 0, 20, 100);

    SetBrushType (hdc, BT_OPAQUE_STIPPLED);
    ArcEx (hdc, 400, 100, 200, 300, 180*64, 180*64);
#endif
}
#endif

#endif

#define TEXT_WIDTH      630
#define TEXT_HEIGHT     120
#define LOGO_WIDTH      179
#define LOGO_HEIGHT     194
#define IDT_ANIMATION   100
#define FRAME_SPEED     10      /* 10 frames per second */

static BOOL anim_inited = FALSE;
static HDC shadow;
static HDC logo_layer;
static HDC text_layer;
static int text_line;
static const char* text[] = {
    "MiniGUI Version 1.5.x.",
    "Copyright (C) 1998 ~ 2002 Feynman Software and others.",
    "MiniGUI is free software, covered by the GNU General Public License, ",
    "and you are welcome to change it and/or distribute copies of it under certain conditions. ",
    "Please visit\nhttp://www.minigui.org and http://www.minigui.com\nto know the details.",
    "ＭｉｎｉＧＵＩ版本１．５．ｘ。",
    "版权所有，一九九八至二零零二年，北京飞漫软件技术有限公司。",
    "该软件是自由软件，遵循ＧＮＵ通用公共许可证发布，",
    "您可以在特定条件下修改或者发布该软件。",
    "相关信息，敬请参阅\nhttp://www.minigui.org\nhttp://www.minigui.com.",
};
static PLOGFONT logfonttimes;
static RECT text_rc;
static int x, y = 20, oldx = -100, oldy, xdir = 1, ydir = 1, count;
static int xspeed = 4, yspeed = 4;


void GDIDemo_Animated (HWND hwnd, HDC hdc)
{
    //unsigned int start_tick, end_tick;

   if (!anim_inited) {
       BITMAP *logo = bmp_sample;
       logo_layer = CreateCompatibleDCEx (hdc, 
                       LOGO_WIDTH, LOGO_HEIGHT);
       FillBoxWithBitmap (logo_layer, 0, 0, 0, 0, logo);

       shadow = CreateCompatibleDC (hdc);
       text_layer = CreateMemDC (TEXT_WIDTH, TEXT_HEIGHT, 24, 
                       MEMDC_FLAG_HWSURFACE | 
                       MEMDC_FLAG_SRCALPHA | 
                       MEMDC_FLAG_SRCCOLORKEY,
                       0x00FF0000, 0x0000FF00, 
                       0x000000FF, 0x0000000);
       SetMemDCColorKey (text_layer, MEMDC_FLAG_SRCCOLORKEY, 0);
       logfonttimes = CreateLogFont (NULL, "Times", "GB2312", 
           FONT_WEIGHT_REGULAR, FONT_SLANT_ROMAN, 
           FONT_SETWIDTH_NORMAL, FONT_SPACING_CHARCELL, 
           FONT_UNDERLINE_NONE, FONT_STRUCKOUT_NONE, 
           24, 0);
       SelectFont (text_layer, logfonttimes);

       SetBrushColor (hdc, PIXEL_lightwhite);
       FillBox (hdc, 0, 0, -1, -1);
       text_rc.left = 0; text_rc.top = 0;
       text_rc.right = TEXT_WIDTH; text_rc.bottom = TEXT_HEIGHT;
       anim_inited = TRUE;
   }
   text_line = 0;
   //SetTimer (hWnd, IDT_ANIMATION, FRAME_SPEED);
   ReleaseDC (hdc);
}

void GDIDemo_Animated_Timer (HWND hwnd)
{
    unsigned int start_tick, end_tick;
    HDC hdc;

    if (!anim_inited)
        return;
 
    start_tick = GetTickCount ();
    /* prepaer the text layer */
    if (count == 0) {
        SetBrushColor (text_layer, 
                        RGB2Pixel (text_layer, 0x00, 0x00, 0x00));
        FillBox (text_layer, 0, 0, -1, -1);
        SetBkColor (text_layer, 
                        RGB2Pixel (text_layer, 0x00, 0x00, 0xFF));
        SetTextColor (text_layer, 
                        RGB2Pixel (text_layer, 0xFF, 0xFF, 0xFF));
        SetBkMode (text_layer, BM_OPAQUE);
        DrawText (text_layer, text [text_line], -1, &text_rc, 
                        DT_CENTER | DT_WORDBREAK);
        text_line ++;
        if (text_line == 10) text_line = 0;
    }
 
    SetBrushColor (shadow, PIXEL_lightwhite);
    FillBox (shadow, 0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 
    x += xspeed * xdir;
    y += yspeed * ydir;
    if (x < 0) {
        xdir = 1;
        xspeed = rand() % 4 + 2;
    }
    if (x >= DEFAULT_WIDTH) {
        xdir = -1;
        xspeed = rand() % 4 + 2;
    }
    if (y < 0) {
        ydir = 1;
        yspeed = rand() % 4 + 2;
    }
    if (y >= DEFAULT_HEIGHT) {
        ydir = -1;
        yspeed = rand() % 4 + 2;
    }
 
    BitBlt (logo_layer, 0, 0, 0, 0, shadow, x, y, 0);
 
    SetMemDCAlpha (text_layer, MEMDC_FLAG_SRCALPHA, 255 - count * 4);
    BitBlt (text_layer, 0, 0, 0, 0, shadow, 
                    0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 0);
 
    hdc = GetClientDC (hwnd);
    if (oldx > -100) {
        BitBlt (shadow, oldx, oldy, 
                        LOGO_WIDTH, LOGO_HEIGHT, hdc, oldx, oldy, 0);
    }
    oldx = x;
    oldy = y;
    BitBlt (shadow, x, y, LOGO_WIDTH, LOGO_HEIGHT, hdc, x, y, 0);
    BitBlt (shadow, 0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 
                    DEFAULT_WIDTH, TEXT_HEIGHT, 
                    hdc, 
                    0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 0);
    SetTextColor (shadow, 
                    RGB2Pixel (hdc, (int)(255 * sin(count * M_PI / 63)),
                               0x00, 0x00));
    SetBkColor (shadow, PIXEL_lightwhite);
    SetBkMode (shadow, BM_TRANSPARENT);
    //TextOut (shadow, 0, 0, "Type 'S' to stop animation.");
    BitBlt (shadow, 0, 0, 200, 20, hdc, 0, 0, 0);
    ReleaseDC (hdc);
    end_tick = GetTickCount ();
 
    // printf ("Ticks per frame: %u\n", end_tick - start_tick);
 
    count++;
    if (count == 64)
        count = 0;
}

#endif

int GDIDemoWinProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam)
{
    unsigned int start_tick, end_tick;
    HDC hdc;

    switch (message) {
#ifdef _USE_NEWGAL
        case MSG_TIMER:
            if (!anim_inited || wParam != IDT_ANIMATION)
                return 0;

            start_tick = GetTickCount ();
            /* prepaer the text layer */
            if (count == 0) {
                SetBrushColor (text_layer, 
                                RGB2Pixel (text_layer, 0x00, 0x00, 0x00));
                FillBox (text_layer, 0, 0, -1, -1);
                SetBkColor (text_layer, 
                                RGB2Pixel (text_layer, 0x00, 0x00, 0xFF));
                SetTextColor (text_layer, 
                                RGB2Pixel (text_layer, 0xFF, 0xFF, 0xFF));
                SetBkMode (text_layer, BM_OPAQUE);
                DrawText (text_layer, text [text_line], -1, &text_rc, 
                                DT_CENTER | DT_WORDBREAK);
                text_line ++;
                if (text_line == 10) text_line = 0;
            }

            SetBrushColor (shadow, PIXEL_lightwhite);
            FillBox (shadow, 0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT);

            x += xspeed * xdir;
            y += yspeed * ydir;
            if (x < 0) {
                xdir = 1;
                xspeed = rand() % 4 + 2;
            }
            if (x >= DEFAULT_WIDTH) {
                xdir = -1;
                xspeed = rand() % 4 + 2;
            }
            if (y < 0) {
                ydir = 1;
                yspeed = rand() % 4 + 2;
            }
            if (y >= DEFAULT_HEIGHT) {
                ydir = -1;
                yspeed = rand() % 4 + 2;
            }

            BitBlt (logo_layer, 0, 0, 0, 0, shadow, x, y, 0);

            SetMemDCAlpha (text_layer, MEMDC_FLAG_SRCALPHA, 255 - count * 4);
            BitBlt (text_layer, 0, 0, 0, 0, shadow, 
                            0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 0);

            hdc = GetClientDC (hWnd);
#if 1
            if (oldx > -100) {
                BitBlt (shadow, oldx, oldy, 
                                LOGO_WIDTH, LOGO_HEIGHT, hdc, oldx, oldy, 0);
            }
            oldx = x;
            oldy = y;
            BitBlt (shadow, x, y, LOGO_WIDTH, LOGO_HEIGHT, hdc, x, y, 0);
            BitBlt (shadow, 0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 
                            DEFAULT_WIDTH, TEXT_HEIGHT, 
                            hdc, 
                            0, (DEFAULT_HEIGHT - TEXT_HEIGHT)/2, 0);
            SetTextColor (shadow, 
                            RGB2Pixel (hdc, (int)(255 * sin(count * M_PI / 63)),
                                       0x00, 0x00));
            SetBkColor (shadow, PIXEL_lightwhite);
            SetBkMode (shadow, BM_TRANSPARENT);
            //TextOut (shadow, 0, 0, "Type 'S' to stop animation.");
            BitBlt (shadow, 0, 0, 200, 20, hdc, 0, 0, 0);
#else
            TextOut (shadow, 0, 0, "Type 'S' to stop animation.");
            BitBlt (shadow, 0, 0, 0, 0, hdc, 0, 0, 0);
#endif
            ReleaseDC (hdc);
            end_tick = GetTickCount ();

            // printf ("Ticks per frame: %u\n", end_tick - start_tick);

            count++;
            if (count == 64)
                count = 0;
            break;
#endif

        case MSG_CHAR:
#ifdef _USE_NEWGAL
            if (anim_inited && wParam != 's' && wParam != 'S')
                break;
#endif

            srand (time (NULL));
            hdc = GetClientDC (hWnd);
            switch (wParam) {
            case '1':
                GDIDemo_NormalLines (hWnd, hdc);
                break;
            case '2':
                GDIDemo_XoredLines (hWnd, hdc);
                break;
            case '3':
                GDIDemo_Filling (hWnd, hdc);
                break;
            case '4':
                GDIDemo_NormalBitmaps (hWnd, hdc);
                break;
            case '5':
                GDIDemo_TransparentBitmaps (hWnd, hdc);
                break;
            case '6':
                GDIDemo_AlphaBlendedBitmaps (hWnd, hdc);
                break;
            case '7':
                GDIDemo_MemDC (hWnd, hdc);
                break;
#ifdef _USE_NEWGAL
            case '8':
                if (!anim_inited) {
                    BITMAP logo;
                    if (LoadBitmap (hdc, &logo, "res/logo.bmp")) {
                        break;
                    }
                    logo_layer = CreateCompatibleDCEx (hdc, 
                                    LOGO_WIDTH, LOGO_HEIGHT);
                    FillBoxWithBitmap (logo_layer, 0, 0, 0, 0, &logo);
                    UnloadBitmap (&logo);

                    shadow = CreateCompatibleDC (hdc);
                    text_layer = CreateMemDC (TEXT_WIDTH, TEXT_HEIGHT, 24, 
                                    MEMDC_FLAG_HWSURFACE | 
                                    MEMDC_FLAG_SRCALPHA | 
                                    MEMDC_FLAG_SRCCOLORKEY,
                                    0x00FF0000, 0x0000FF00, 
                                    0x000000FF, 0x0000000);
                    SetMemDCColorKey (text_layer, MEMDC_FLAG_SRCCOLORKEY, 0);
                    logfonttimes = CreateLogFont (NULL, "Times", "GB2312", 
                        FONT_WEIGHT_REGULAR, FONT_SLANT_ROMAN, 
                        FONT_SETWIDTH_NORMAL, FONT_SPACING_CHARCELL, 
                        FONT_UNDERLINE_NONE, FONT_STRUCKOUT_NONE, 
                        24, 0);
                    SelectFont (text_layer, logfonttimes);

                    SetBrushColor (hdc, PIXEL_lightwhite);
                    FillBox (hdc, 0, 0, -1, -1);
                    text_rc.left = 0; text_rc.top = 0;
                    text_rc.right = TEXT_WIDTH; text_rc.bottom = TEXT_HEIGHT;
                    anim_inited = TRUE;
                }
                text_line = 0;
                SetTimer (hWnd, IDT_ANIMATION, FRAME_SPEED);
                ReleaseDC (hdc);
                return 0;

            case '-':
                if (anim_inited) {
                    DeleteMemDC (shadow);
                    DeleteMemDC (logo_layer);
                    DeleteMemDC (text_layer);
                    if (logfonttimes)
                        DestroyLogFont (logfonttimes);
                    anim_inited = FALSE;
                    KillTimer (hWnd, IDT_ANIMATION);
                    break;
                }
                break;

            case '9':
                //GDIDemo_Region (hWnd, hdc);
                ReleaseDC (hdc);
                return 0;

#ifdef _USE_NEWGAL
            case '0':
                //test_yuv(hWnd, hdc);
                ReleaseDC (hdc);
                return 0;
#ifdef _ADV_2DAPI
            case '+':
                GDIDemo_Adv2DAPI (hWnd, hdc);
                ReleaseDC (hdc);
                return 0;
#endif

#endif
#endif

            case '*':
                PostMessage (hWnd, MSG_CLOSE, 0, 0);
                break;
            }
            ReleaseDC (hdc);
            InvalidateRect (hWnd, NULL, TRUE);
        break;

        case MSG_PAINT:
            hdc = BeginPaint (hWnd);
            SetTextColor (hdc, PIXEL_black);
            SetBkColor (hdc, PIXEL_lightwhite);
            SetBkMode (hdc, BM_TRANSPARENT);
            TabbedTextOut (hdc, 10, 10, 
                                 "Press '1': Drawing normal lines and curves.\n"
                                 "Press '2': Drawing xored lines and curves.\n"
                                 "Press '3': Drawing filled areas.\n"
                                 "Press '4': Drawing normal bitmaps.\n"
                                 "Press '5': Drawing transparent bitmaps.\n"
                                 "Press '6': Drawing alpha blending bitmaps.\n"
                                 "Press '7': Memory DC and blitting.\n"
                                 "Press '8': Animation.\n"
                                 "Press '9': Complex region.\n"
                                 "Press '0': YUV overlay display.\n"
                                 "Press '+': Advanced 2D functions.\n"
                                 "\nType '*' to quit.");
            EndPaint (hWnd, hdc);
            return 0;

        case MSG_CLOSE:
#ifdef _USE_NEWGAL
            if (anim_inited) {
                DeleteMemDC (shadow);
                DeleteMemDC (logo_layer);
                DeleteMemDC (text_layer);
                DestroyLogFont (logfonttimes);
                anim_inited = FALSE;
                KillTimer (hWnd, IDT_ANIMATION);
            }
#endif
            DestroyMainWindow (hWnd);
            PostQuitMessage (hWnd);
        return 0;
    }

    return DefaultMainWinProc(hWnd, message, wParam, lParam);
}