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- /**************************************************************************\
- * maskblt.c -- sample program demonstrating MaskBlt()
- *
- * Steve Firebaugh
- * Microsoft Developer Support
- * Copyright (c) 1992, 1993 Microsoft Corporation
- *
- * design: There is one main window with one dialog box maskblted to fill
- * the top of it. The parameters for the MaskBlt() are stored in the
- * entry fields of this dialog box. The user may change these values and
- * see the effect on the blt. The top dialog also offers a chance to
- * select from standard raster operations.
- *
- * other modules: track.c bitmap.c
- * (these other 2 modules are the same for all of the XBlt samples,
- * i.e. STREBLT, PLGBLT, ...)
- *
- \**************************************************************************/
-
- #include <windows.h>
- #include <commdlg.h>
- #include <math.h>
- #include <stdio.h>
- #include "maskblt.h"
- #include "track.h"
- #include "bitmap.h"
-
-
- /* Global variables */
- HANDLE hInst;
- HWND hwndMain, hwndDlg;
-
- PTrackObject ptoSrc, ptoDest, ptoMask = NULL;
- HDC hdcSrc, hdcDest, hdcMask;
- HBITMAP hbmSrc = NULL;
- HBITMAP hbmMask = NULL;
-
- #define NONE -1
- int iPatternBrush = NONE;
-
-
-
- /**************************************************************************\
- *
- * function: WinMain()
- *
- * input parameters: c.f. generic sample
- *
- \**************************************************************************/
- int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
- LPSTR lpCmdLine, int nCmdShow)
- {
- MSG msg;
- RECT rect;
- HANDLE haccel;
-
-
- UNREFERENCED_PARAMETER( lpCmdLine );
-
-
- /* Check for previous instance. If none, then register class. */
- if (!hPrevInstance) {
- WNDCLASS wc;
-
- wc.style = 0;
- wc.lpfnWndProc = (WNDPROC)MainWndProc;
-
- wc.cbClsExtra = 0;
- wc.cbWndExtra = 0;
- wc.hInstance = hInstance;
- wc.hIcon = LoadIcon(hInstance, "MaskBltIcon");
- wc.hCursor = LoadCursor(NULL, IDC_ARROW);
- wc.hbrBackground = GetStockObject(LTGRAY_BRUSH);
- wc.lpszMenuName = NULL;
- wc.lpszClassName = "MaskBlt";
-
- if (!RegisterClass(&wc)) return (FALSE);
- } /* class registered o.k. */
-
-
- /* Create the main window. Return false if CreateWindow() fails */
- hInst = hInstance;
-
- hwndMain = CreateWindow(
- "MaskBlt",
- "MaskBlt",
- WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- NULL,
- NULL,
- hInstance,
- NULL);
-
- if (!hwndMain) return (FALSE);
-
-
- /* create the top dialog as a child of the main window. */
- hwndDlg = CreateDialog (hInst, "maskbltDlg", hwndMain, (DLGPROC)DlgProc);
-
- /* Send main window a WM_SIZE message so that it will size the top
- * dialog correctly.
- */
- GetClientRect (hwndMain, &rect);
- SendMessage (hwndMain, WM_SIZE, 0, (rect.right - rect.left));
- ShowWindow (hwndDlg, SW_SHOW);
- ShowWindow(hwndMain, nCmdShow);
-
-
- /* Load the accelerator table that provides clipboard support. */
- haccel = LoadAccelerators (hInst, "bltAccel");
-
-
- /* Loop getting messages and dispatching them. */
- while (GetMessage(&msg,NULL, 0,0)) {
- if (!TranslateAccelerator(hwndMain, haccel, &msg))
- if (!IsDialogMessage (hwndDlg, &msg)){
- DispatchMessage(&msg);
- }
- }
-
- /* Return the value from PostQuitMessage */
- return (msg.wParam);
- }
-
-
-
-
- /**************************************************************************\
- *
- * function: MainWndProc()
- *
- * input parameters: normal window procedure parameters.
- *
- * There are 6 different HDCs used for the main window (in addition to the
- * temporary one returned from BeginPaint). There are two for each of the
- * three thirds of the window. The first one contains the bitmap. The
- * second one is for the track object and is stored in the TRACKOBJECT
- * structure.
- *
- * global variables:
- * hwndDlg - dialog with entry fields containing parameters.
- * ptoDest, ptoSrc, ptoMask - pointers to the direct manipulation objects
- * hdcDest, hdcSrc, hdcMask - HDCs for the 3 sub regions of the window.
- * hbmSrc, hbmMask - bitmap handles for source and mask.
- * iPatternBrush - Selection from combo box, set into the hdc.
- \**************************************************************************/
- LRESULT CALLBACK MainWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- static int miniWidth;
- static RECT rect;
- static HANDLE hPenGrid, hPenSeparator;
-
- switch (message) {
-
- /**********************************************************************\
- * WM_CREATE
- *
- * Get three new HDCs, then create three new track objects.
- * Each track object has different allowed tracking modes.
- * Finally create two pens for drawing later on.
- \**********************************************************************/
- case WM_CREATE:
- hdcSrc = GetDC (hwnd);
- hdcDest = GetDC (hwnd);
- hdcMask = GetDC (hwnd);
-
- ptoDest = doTrackObject (NULL, TROB_NEW, hwnd,0);
- ptoDest->allowedModes = TMMOVE | TMSIZEXY;
- ptoSrc = doTrackObject (NULL, TROB_NEW, hwnd,0);
- ptoSrc->allowedModes = TMMOVE;
- ptoMask = doTrackObject (NULL, TROB_NEW, hwnd,0);
- ptoMask->allowedModes = TMMOVE;
-
- hPenGrid = CreatePen (PS_SOLID, 1, GRIDCOLOR);
- hPenSeparator = CreatePen (PS_SOLID, 2*SEPARATORWIDTH, (COLORREF) 0x01000000);
- break;
-
-
- /**********************************************************************\
- * WM_DESTROY
- *
- * Complement of WM_CREATE. Free up all of the HDCs, send all of the
- * track objects their delete messages, delete the pens,
- * then call PostQuitMessage.
- \**********************************************************************/
- case WM_DESTROY:
- ReleaseDC (hwnd, hdcSrc );
- ReleaseDC (hwnd, hdcDest);
- ReleaseDC (hwnd, hdcMask);
- doTrackObject (ptoDest, TROB_DELETE, hwnd,0);
- doTrackObject (ptoSrc , TROB_DELETE, hwnd,0);
- doTrackObject (ptoMask, TROB_DELETE, hwnd,0);
-
- DeleteObject(hPenGrid);
- DeleteObject(hPenSeparator);
-
- PostQuitMessage(0);
- break;
-
-
-
- /**********************************************************************\
- * WM_SIZE
- *
- * Stretch the top dialog to fill the width of the main window.
- * Adjust the viewport origins of the 6 HDCs.
- * Set the clip regions of the 6 HDCs.
- \**********************************************************************/
- case WM_SIZE: {
- HRGN hrgn;
-
- SetWindowPos (hwndDlg, NULL, 0,0, LOWORD(lParam), DIALOGHEIGHT, 0);
-
- GetClientRect (hwndMain, &rect);
- miniWidth = rect.right/3;
-
- SetViewportOrgEx (hdcDest, 0, DIALOGHEIGHT, NULL);
- SetViewportOrgEx (ptoDest->hdc, 0, DIALOGHEIGHT, NULL);
- SetViewportOrgEx (hdcSrc, miniWidth, DIALOGHEIGHT, NULL);
- SetViewportOrgEx (ptoSrc->hdc, miniWidth, DIALOGHEIGHT, NULL);
- SetViewportOrgEx (hdcMask, 2*miniWidth, DIALOGHEIGHT, NULL);
- SetViewportOrgEx (ptoMask->hdc, 2*miniWidth, DIALOGHEIGHT, NULL);
-
- ptoDest->rectClip.left = 0;
- ptoDest->rectClip.top = DIALOGHEIGHT;
- ptoDest->rectClip.right = miniWidth-2*SEPARATORWIDTH;
- ptoDest->rectClip.bottom = rect.bottom;
- hrgn = CreateRectRgnIndirect (&ptoDest->rectClip);
- SelectClipRgn (hdcDest, hrgn);
- SelectClipRgn (ptoDest->hdc, hrgn);
- DeleteObject (hrgn);
-
- ptoSrc->rectClip.left = miniWidth;
- ptoSrc->rectClip.top = DIALOGHEIGHT;
- ptoSrc->rectClip.right = 2*miniWidth-2*SEPARATORWIDTH;
- ptoSrc->rectClip.bottom = rect.bottom;
- hrgn = CreateRectRgnIndirect (&ptoSrc->rectClip);
- SelectClipRgn (hdcSrc, hrgn);
- SelectClipRgn (ptoSrc->hdc, hrgn);
- DeleteObject (hrgn);
-
- ptoMask->rectClip.left = 2*miniWidth;
- ptoMask->rectClip.top = DIALOGHEIGHT;
- ptoMask->rectClip.right = 3*miniWidth;
- ptoMask->rectClip.bottom = rect.bottom;
- hrgn = CreateRectRgnIndirect (&ptoMask->rectClip);
- SelectClipRgn (hdcMask, hrgn);
- SelectClipRgn (ptoMask->hdc, hrgn);
- DeleteObject (hrgn);
-
- SendMessage (hwndDlg, WM_PUTUPDESTRECT, (DWORD)hdcDest, (LONG)ptoDest);
- SendMessage (hwndDlg, WM_PUTUPSRCRECT, (DWORD)hdcSrc, (LONG)ptoSrc);
- SendMessage (hwndDlg, WM_PUTUPMASKPT, (DWORD)hdcMask, (LONG)ptoMask);
-
- /* repaint the whole window. */
- InvalidateRect (hwnd, NULL, TRUE);
- } break;
-
-
-
- /**********************************************************************\
- * WM_PAINT
- *
- * miniWidth, rect -- set by WM_SIZE message.
- *
- * First shift the viewport origin down so that 0,0 is the top left
- * most visible point (out from underneath the top dialog). Second,
- * draw the grid with wider lines on the axes. Finally, read the
- * values out of the top dialog, do elementary validation, and then
- * try to call MaskBlt() with the values.
- \**********************************************************************/
- case WM_PAINT: {
- HDC hdc;
- PAINTSTRUCT ps;
-
- hdc = BeginPaint(hwnd, &ps);
-
- /* Draw Separator lines for the three miniareas */
- SelectObject(hdc, hPenSeparator);
- MoveToEx (hdc, miniWidth-SEPARATORWIDTH,0, NULL);
- LineTo (hdc, miniWidth-SEPARATORWIDTH, rect.bottom);
- MoveToEx (hdc, 2*miniWidth-SEPARATORWIDTH,0, NULL);
- LineTo (hdc, 2*miniWidth-SEPARATORWIDTH, rect.bottom);
-
- /* Grid the HDCs */
- SelectObject(hdcSrc, hPenGrid);
- DrawGrids (hdcSrc, miniWidth, rect.bottom);
- SelectObject(hdcMask, hPenGrid);
- DrawGrids (hdcMask, miniWidth, rect.bottom);
-
- /* Draw bitmaps if any, then draw track objects over them. */
- if (hbmSrc) DrawBitmap (hdcSrc, hbmSrc);
- if (hbmMask) DrawBitmap (hdcMask, hbmMask);
- doTrackObject (ptoSrc , TROB_PAINT, hwnd, 0);
- doTrackObject (ptoMask, TROB_PAINT, hwnd, 0);
-
- /* paint the left third of the window. */
- SendMessage (hwnd, WM_MASKBLT, 0,0);
-
- EndPaint (hwnd, &ps);
- } return FALSE;
-
-
-
- /**********************************************************************\
- * WM_MASKBLT
- *
- * WM_USER message. This paints the left third of the window. It
- * is called on the WM_PAINT message. It is separated out here because
- * it is common for just the MaskBlt() to need to be called and not the
- * whole window painted.
- \**********************************************************************/
- case WM_MASKBLT: {
- int X, Y, nWidth, nHeight;
- int XSrc, YSrc, XMask, YMask;
- DWORD rop, ropByte;
- char buffer[MAXCHARS];
-
- BOOL success;
- RECT cliprect;
-
- doTrackObject (ptoSrc , TROB_PAINT, hwnd, 0);
- doTrackObject (ptoMask, TROB_PAINT, hwnd, 0);
-
- GetClipBox (hdcDest, &cliprect);
- FillRect (hdcDest, &cliprect,
- (HBRUSH) GetClassLong (hwnd, GCL_HBRBACKGROUND));
- SelectObject(hdcDest, hPenGrid);
-
- DrawGrids (hdcDest, miniWidth, rect.bottom);
- if (IsWindow(hwndDlg)) {
-
- /* Grab points out of the dialog entry fields. */
- X = GetDlgItemInt(hwndDlg, DID_X, &success, TRUE);
- Y = GetDlgItemInt(hwndDlg, DID_Y, &success, TRUE);
- nWidth = GetDlgItemInt(hwndDlg, DID_WIDTH, &success, TRUE);
- nHeight= GetDlgItemInt(hwndDlg, DID_HEIGHT, &success, TRUE);
-
- XSrc = GetDlgItemInt(hwndDlg, DID_XSRC, &success, TRUE);
- YSrc = GetDlgItemInt(hwndDlg, DID_YSRC, &success, TRUE);
- XMask = GetDlgItemInt(hwndDlg, DID_XMASK, &success, TRUE);
- YMask = GetDlgItemInt(hwndDlg, DID_YMASK, &success, TRUE);
-
- /* get high order ROP byte and shift left by two bytes. */
- GetDlgItemText(hwndDlg, DID_ROP0, buffer, MAXCHARS);
- sscanf (buffer, "%lx", &ropByte);
- rop = ropByte * 256 * 256 * 256;
-
- /* get the next ROP byte and shift left by one byte. */
- GetDlgItemText(hwndDlg, DID_ROP1, buffer, MAXCHARS);
- sscanf (buffer, "%lx", &ropByte);
- rop += ropByte * 256 * 256;
-
- /* get the next ROP byte and shift left by one byte. */
- GetDlgItemText(hwndDlg, DID_ROP2, buffer, MAXCHARS);
- sscanf (buffer, "%lx", &ropByte);
- rop += ropByte * 256;
-
- /* finally, get the low order ROP byte. */
- GetDlgItemText(hwndDlg, DID_ROP3, buffer, MAXCHARS);
- sscanf (buffer, "%lx", &ropByte);
- rop += ropByte;
-
- /* select the pattern brush. (user selects via combo box.) */
- if (iPatternBrush != NONE)
- SelectObject (hdcDest, GetStockObject (iPatternBrush));
-
-
- /**********************************************************/
- /**********************************************************/
- MaskBlt (hdcDest, X, Y, nWidth, nHeight,
- hdcSrc, XSrc, YSrc,
- hbmMask, XMask, YMask, rop);
- /**********************************************************/
- /**********************************************************/
- }
- doTrackObject (ptoSrc , TROB_PAINT, hwnd, 0);
- doTrackObject (ptoMask, TROB_PAINT, hwnd, 0);
- } break;
-
-
-
- /**********************************************************************\
- * WM_LBUTTONDOWN & WM_RBUTTONDOWN
- * On button down messages, hittest on the track object, and if
- * it returns true, then send these messages to the track object.
- \**********************************************************************/
- case WM_RBUTTONDOWN:
- case WM_LBUTTONDOWN:
- if (doTrackObject(ptoDest, TROB_HITTEST, hwnd, lParam))
- doTrackObject(ptoDest, message, hwnd, lParam);
- else if (doTrackObject(ptoSrc, TROB_HITTEST, hwnd, lParam))
- doTrackObject(ptoSrc, message, hwnd, lParam);
- else if (doTrackObject(ptoMask, TROB_HITTEST, hwnd, lParam))
- doTrackObject(ptoMask, message, hwnd, lParam);
- break;
-
-
-
- /**********************************************************************\
- * WM_LBUTTONUP & WM_RBUTTONDOWN & MW_MOUSEMOVE
- * If the track object is in a "tracking mode" then send it these messages.
- * If the transform dialog is not minimized, fill it with numbers.
- * If the mouse dialog is not minimized, fill it with numbers.
- \**********************************************************************/
- case WM_RBUTTONUP:
- case WM_LBUTTONUP:
- /* user action complete. Force MaskBlt() update. */
- PostMessage (hwndMain, WM_MASKBLT, 0,0);
- case WM_MOUSEMOVE:
- if (ptoDest->Mode) {
- doTrackObject(ptoDest, message, hwnd, lParam);
- SendMessage (hwndDlg, WM_PUTUPDESTRECT, (DWORD) hdcDest, (LONG) ptoDest);
- }
- if (ptoSrc->Mode) {
- doTrackObject(ptoSrc, message, hwnd, lParam);
- SendMessage (hwndDlg, WM_PUTUPSRCRECT, (DWORD) hdcSrc, (LONG) ptoSrc);
- }
-
- if (ptoMask->Mode) {
- doTrackObject(ptoMask, message, hwnd, lParam);
- SendMessage (hwndDlg, WM_PUTUPMASKPT, (DWORD) hdcMask, (LONG) ptoMask);
- }
-
- break;
-
-
-
- /**********************************************************************\
- * Accelerator & clipboard support.
- *
- * Certain key strokes (c.f. *.rc) will cause the following WM_COMMAND
- * messages. In response the app will copy a bitmap into the clipboard
- * or paste down from it. In both cases, it is necessary to create a
- * new bitmap since a bitmap in the clipboard belongs to the clipboard
- * and not to the application.
- \**********************************************************************/
- case WM_COMMAND:
- switch (LOWORD(wParam)) {
- HBITMAP hbmCompat, hbmOld;
- HDC hdcCompat;
-
- /******************************************************************\
- * WM_COMMAND, AID_COPY
- *
- * Create a new bitmap, copy the destination HDC bits into it,
- * and send the new bitmap to the clipboard.
- \******************************************************************/
- case AID_COPY: {
- int X,Y, nWidth, nHeight;
- BOOL success;
-
- X = GetDlgItemInt(hwndDlg, DID_X, &success, TRUE);
- Y = GetDlgItemInt(hwndDlg, DID_Y, &success, TRUE);
- nWidth = GetDlgItemInt(hwndDlg, DID_WIDTH, &success, TRUE);
- nHeight = GetDlgItemInt(hwndDlg, DID_HEIGHT, &success, TRUE);
-
-
- hdcCompat = CreateCompatibleDC(hdcDest);
- hbmCompat = CreateCompatibleBitmap (hdcDest, nWidth, nHeight);
- hbmOld = SelectObject(hdcCompat,hbmCompat);
-
- BitBlt (hdcCompat, 0,0,nWidth, nHeight, hdcDest, X,Y, SRCCOPY );
-
- SelectObject(hdcCompat,hbmOld);
- DeleteDC(hdcCompat);
-
- OpenClipboard (hwnd);
- SetClipboardData (CF_BITMAP,hbmCompat);
- CloseClipboard ();
-
- DeleteObject (hbmCompat);
-
- } break;
-
-
- /******************************************************************\
- * WM_COMMAND, AID_PASTE
- *
- * Get bitmap handle from clipboard, create a new bitmap, draw
- * the clipboard bitmap into the new one, and store the new
- * handle in the global hbmSrc.
- \******************************************************************/
- case AID_PASTE: {
- HBITMAP hbm;
- BITMAP bm;
-
- OpenClipboard (hwnd);
- if ( hbm = GetClipboardData (CF_BITMAP)) {
- DeleteObject (hbmSrc);
-
- GetObject (hbm, sizeof(BITMAP), &bm);
-
- hdcCompat = CreateCompatibleDC(hdcDest);
- hbmCompat = CreateCompatibleBitmap (hdcDest, bm.bmWidth, bm.bmHeight);
- hbmOld = SelectObject(hdcCompat,hbmCompat);
-
- DrawBitmap (hdcCompat, hbm);
-
- SelectObject(hdcCompat,hbmOld);
- DeleteDC(hdcCompat);
-
- hbmSrc = hbmCompat;
-
- InvalidateRect (hwnd, &ptoSrc->rectClip, TRUE);
- InvalidateRect (hwnd, &ptoDest->rectClip, TRUE);
- }
- CloseClipboard ();
- } break;
-
- /******************************************************************\
- * WM_COMMAND, AID_CYCLE
- *
- * Post a COPY and PASTE command message to this window so that with
- * one key stroke the user can copy the DEST image into the clipboard,
- * paste it down into the SRC hdc and cause the blt.
- \******************************************************************/
- case AID_CYCLE:
- PostMessage (hwnd, WM_COMMAND, MAKELONG (AID_COPY , 1), 0);
- PostMessage (hwnd, WM_COMMAND, MAKELONG (AID_PASTE, 1), 0);
- break;
- } /* end switch */
-
- break; /* end wm_command */
-
-
-
- } /* end switch */
- return (DefWindowProc(hwnd, message, wParam, lParam));
- }
-
-
-
-
- /**************************************************************************\
- *
- * function: DlgProc()
- *
- * input parameters: normal window procedure parameters.
- *
- * Respond to user button presses by getting new bitmaps or by sending
- * the main window a WM_MASKBLT message. Also handle special user messages
- * for updating the entry fields with the contents of the direct manipulation
- * objects.
- *
- * global variables:
- * hwndMain - the main window. also the parent of this dialog
- * ptoDest, ptoSrc, ptoMask - pointers to the direct manipulation objects
- * hdcDest, hdcSrc, hdcMask - HDCs for the 3 sub regions of the window.
- * hbmSrc, hbmMask - bitmap handles for source and mask.
- \**************************************************************************/
- LRESULT CALLBACK DlgProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- char buffer[MAXCHARS];
- HBITMAP hbm;
-
-
- switch (message) {
- /**********************************************************************\
- * WM_INITDIALOG
- *
- * Fill the entry fields with sensible original values.
- \**********************************************************************/
- case WM_INITDIALOG: {
- int i;
-
- for (i = DID_X; i<= DID_YMASK; i++)
- SetDlgItemText(hwnd, i, "0");
-
- /* these are the three bytes from SRCCOPY */
- SetDlgItemText(hwnd, DID_ROP0 , "00");
- SetDlgItemText(hwnd, DID_ROP1 , "cc");
- SetDlgItemText(hwnd, DID_ROP2 , "00");
- SetDlgItemText(hwnd, DID_ROP3 , "20");
-
- for (i = 0; i< NROPS; i++)
- SendDlgItemMessage (hwnd, DID_CB_ROPS, CB_INSERTSTRING,
- (DWORD) -1, (LONG)StandardROPs[i].String);
-
- for (i = 0; i< NPATTERNS; i++)
- SendDlgItemMessage (hwnd, DID_CB_PATTERN, CB_INSERTSTRING,
- (DWORD) -1, (LONG)Patterns[i].String);
-
-
- } return TRUE;
-
-
-
-
- /**********************************************************************\
- * WM_PUTUPDESTRECT
- *
- * wParam - HDC with the needed world transform.
- * lParam - Pointer to the track object.
- *
- * Fill the entry fields for the destination rectangle points.
- * Conditionally change <x,y> or <width,height> depending on tracking mode.
- \**********************************************************************/
- case WM_PUTUPDESTRECT: {
- POINT p1,p2, origin;
- PTrackObject pto;
- HDC hdc;
-
- hdc = (HDC) wParam;
- pto = (PTrackObject) lParam;
- GetViewportOrgEx (hdc, &origin);
-
- p1.x = pto->rect.left;
- p1.y = pto->rect.top;
- LPtoDP (pto->hdc, &p1, 1);
-
- p2.x = pto->rect.right;
- p2.y = pto->rect.bottom;
- LPtoDP (pto->hdc, &p2, 1);
- p2.x -= p1.x; p2.y -= p1.y;
-
- p1.x -= origin.x; p1.y -= origin.y;
-
- if (!(pto->Mode & TMSIZEXY)) {
- SetDlgItemInt(hwnd, DID_X, p1.x, TRUE);
- SetDlgItemInt(hwnd, DID_Y, p1.y, TRUE);
- }
-
- if (!(pto->Mode & TMMOVE)) {
- SetDlgItemInt(hwnd, DID_WIDTH, p2.x, TRUE);
- SetDlgItemInt(hwnd, DID_HEIGHT, p2.y, TRUE);
- }
- } return FALSE;
-
-
-
-
- /**********************************************************************\
- * WM_PUTUPSRCRECT
- *
- * wParam - HDC with the needed world transform.
- * lParam - Pointer to the track object.
- *
- * Fill the entry fields for the source location point.
- \**********************************************************************/
- case WM_PUTUPSRCRECT: {
- POINT p1, origin;
- PTrackObject pto;
- HDC hdc;
-
- hdc = (HDC) wParam;
- pto = (PTrackObject) lParam;
- GetViewportOrgEx (hdc, &origin);
-
- p1.x = pto->rect.left;
- p1.y = pto->rect.top;
- LPtoDP (pto->hdc, &p1, 1);
-
- p1.x -= origin.x; p1.y -= origin.y;
-
- SetDlgItemInt(hwnd, DID_XSRC, p1.x, TRUE);
- SetDlgItemInt(hwnd, DID_YSRC, p1.y, TRUE);
-
- } return FALSE;
-
-
-
- /**********************************************************************\
- * WM_PUTUPMASKPT
- *
- * wParam - HDC with the needed world transform.
- * lParam - Pointer to the track object.
- *
- * Fill the entry fields for the mask location point.
- \**********************************************************************/
- case WM_PUTUPMASKPT: {
- POINT p1, origin;
- PTrackObject pto;
- HDC hdc;
-
- hdc = (HDC) wParam;
- pto = (PTrackObject) lParam;
- GetViewportOrgEx (hdc, &origin);
-
- p1.x = pto->rect.left;
- p1.y = pto->rect.top;
- LPtoDP (pto->hdc, &p1, 1);
- p1.x -= origin.x; p1.y -= origin.y;
-
- SetDlgItemInt(hwnd, DID_XMASK, p1.x, TRUE);
- SetDlgItemInt(hwnd, DID_YMASK, p1.y, TRUE);
-
- } return FALSE;
-
-
-
-
-
- case WM_COMMAND:
- switch (LOWORD(wParam)) {
-
- /******************************************************************\
- * WM_COMMAND, DID_DRAW
- *
- * Draw button hit - send main window message to call MaskBlt().
- \******************************************************************/
- case DID_DRAW:
- SendMessage (hwndMain, WM_MASKBLT, 0,0);
- break;
-
-
-
-
- /**********************************************************************\
- * WM_COMMAND, DID_NEWSRC
- *
- * Try to get a new source bitmap. Then
- * invalidate two sub windows so that we force a repaint.
- \**********************************************************************/
- case DID_NEWSRC:
- if ( hbm = GetBitmap (hdcSrc, hInst, FALSE)) {
- DeleteObject (hbmSrc);
- hbmSrc = hbm;
- InvalidateRect (hwndMain, &ptoSrc->rectClip, TRUE);
- InvalidateRect (hwndMain, &ptoDest->rectClip, TRUE);
- }
- break;
-
- /**********************************************************************\
- * WM_COMMAND, DID_NEWMASK
- *
- * Try to get a new mask bitmap. Then
- * invalidate two sub windows so that we force a repaint.
- \**********************************************************************/
- case DID_NEWMASK:
- if ( hbm = GetBitmap (hdcMask, hInst, TRUE)) {
- DeleteObject (hbmMask);
- hbmMask = hbm;
- InvalidateRect (hwndMain, &ptoMask->rectClip, TRUE);
- InvalidateRect (hwndMain, &ptoDest->rectClip, TRUE);
- }
- break;
-
-
-
- /******************************************************************\
- * WM_COMMAND, DID_CB_ROPS
- *
- * A new standard rop entry was selected. Lookup the value,
- * then break it into three parts, convert to hex, and put
- * it in the proper entry fields.
- \******************************************************************/
- case DID_CB_ROPS:
- if (HIWORD (wParam) == CBN_SELCHANGE) {
- int iSel, rop;
-
- iSel = SendMessage ((HWND) lParam, CB_GETCURSEL, 0,0);
- rop = StandardROPs[iSel].Value;
- sprintf (buffer, "%2x", (rop & 0x000000ff));
- SetDlgItemText(hwnd, DID_ROP3, buffer);
- rop /= 256;
- sprintf (buffer, "%2x", (rop & 0x000000ff));
- SetDlgItemText(hwnd, DID_ROP2, buffer);
- rop /= 256;
- sprintf (buffer, "%2x", (rop & 0x000000ff));
- SetDlgItemText(hwnd, DID_ROP1, buffer);
-
- SendMessage (hwndMain, WM_MASKBLT, 0,0);
- }
- break;
-
-
- /******************************************************************\
- * WM_COMMAND, DID_CB_PATTERN
- *
- * A new pattern brush was selected. Look up the value, store it
- * in a global variable (iPatternBrush), then force a new StretchBlt
- \******************************************************************/
- case DID_CB_PATTERN:
- if (HIWORD (wParam) == CBN_SELCHANGE) {
- int iSel;
-
- iSel = SendMessage ((HWND) lParam, CB_GETCURSEL, 0,0);
- iPatternBrush = Patterns[iSel].Value;
-
- SendMessage (hwndMain, WM_MASKBLT, 0,0);
- }
- break;
-
-
-
- } return FALSE; /* end WM_COMMAND switch*/
-
- } /* end switch */
- return 0;
- }
-
-
-
- #define TICKSPACE 20
-
- /**************************************************************************\
- *
- * function: DrawGrids()
- *
- * input parameters:
- * hdc - Device context to draw into.
- * width, height - size of the rectangle to fill with grids.
- *
- * global variables: none.
- *
- \**************************************************************************/
- VOID DrawGrids (HDC hdc, int width, int height)
- {
- int i;
-
- /* Draw vertical lines. Double at the axis */
- for (i = 0; i<= width; i+=TICKSPACE){
- MoveToEx (hdc, i, 0, NULL);
- LineTo (hdc, i, height);
- }
- MoveToEx (hdc, 1, 0, NULL);
- LineTo (hdc, 1, height);
-
- /* Draw horizontal lines. Double at the axis */
- for (i = 0; i<= height; i+=TICKSPACE){
- MoveToEx (hdc, 0,i, NULL);
- LineTo (hdc, width,i);
- }
- MoveToEx (hdc, 0, 1, NULL);
- LineTo (hdc, width,1);
-
- return;
- }
-