397 lines
9.7 KiB
C
397 lines
9.7 KiB
C
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/*
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**************************************************************************
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*
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* dispfram.c
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*
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* DispFrame Control DLL defines a bitmap display control to be used
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* by any windows application.
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*
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* Copyright 1991-3, Microsoft Corporation
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*
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* History:
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*
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* In Sik Rhee - 7/15/91 (original slider.dll)
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* Ben Mejia - 1/22/92 (made display.dll)
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**************************************************************************
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*/
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#pragma warning(disable:4704)
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#include <windows.h>
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#include <custcntl.h>
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#include <commctrl.h>
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#include "draw.h"
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/*
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**************************************************************************
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* global static variables
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**************************************************************************
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*/
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UINT gwPm_DispFrame;
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extern HINSTANCE ghInstance;
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/*
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**************************************************************************
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* prototypes
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**************************************************************************
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*/
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LONG PASCAL dfPaint (HWND hWnd);
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LONG PASCAL dfSetBitmap (HWND hWnd, HBITMAP hBmpNew, HPALETTE
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hPalNew);
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BOOL PASCAL RegSndCntrlClass (LPCTSTR lpszSndCntrlClass);
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LRESULT PASCAL dfDispFrameWndFn (HWND hWnd, UINT wMessage, WPARAM wParam,
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LPARAM lParam);
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BOOL dfDrawRect (HDC hdcRect, RECT rFrame);
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/*
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**************************************************************************
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* RegSndCntrlClass
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*
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* Description: Registers the SndCntrlClass, must be called in LibMain
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*
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* Arguments:
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* LPTSTR lpszSndCntrlClass
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*
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* Returns: BOOL
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* TRUE if RegisterClass succeeds, else FALSE
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*
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**************************************************************************
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*/
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BOOL PASCAL RegSndCntrlClass(LPCTSTR lpszSndCntrlClass)
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{
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extern UINT gwPm_DispFrame;
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/* local variables */
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WNDCLASS ClassStruct;
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/* check to see if class already exists; if so, simply return TRUE */
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if (GetClassInfo(ghInstance, lpszSndCntrlClass, &ClassStruct))
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return TRUE;
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/* define dispfram class attributes */
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ClassStruct.lpszClassName = (LPTSTR)DISPFRAMCLASS;
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ClassStruct.hCursor = LoadCursor( NULL, IDC_ARROW );
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ClassStruct.lpszMenuName = (LPTSTR)NULL;
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ClassStruct.style = CS_HREDRAW|CS_VREDRAW|CS_GLOBALCLASS;
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ClassStruct.lpfnWndProc = dfDispFrameWndFn;
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ClassStruct.hInstance = ghInstance;
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ClassStruct.hIcon = NULL;
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ClassStruct.cbWndExtra = DF_DISP_EXTRA;
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ClassStruct.cbClsExtra = 0;
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ClassStruct.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1 );
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/* register display frame window class */
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if (!RegisterClass(&ClassStruct))
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return FALSE;
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gwPm_DispFrame = RegisterWindowMessage((LPTSTR) DF_WMDISPFRAME);
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if (!gwPm_DispFrame) /* failed to create message */
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return FALSE;
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return TRUE;
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}
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/*
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**************************************************************************
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* dfDispFrameWndFn
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*
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* Description: Window function for display frame control.
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*
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* Arguments:
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* HWND hWnd - handle to control window.
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* UINT wMessage - the message
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* WPARAM wParam
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* LPARAM lParam
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* Returns: LONG
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* result of message processing... depends on message sent.
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*
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**************************************************************************
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*/
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LRESULT PASCAL dfDispFrameWndFn(HWND hWnd, UINT wMessage, WPARAM wParam,
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LPARAM lParam)
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{
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HBITMAP hBmp;
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switch (wMessage)
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{
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case WM_CREATE:
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DF_SET_BMPHANDLE(0);
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DF_SET_BMPPAL(0);
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return 0;
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case WM_DESTROY:
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/* Free up stored bitmap and palette, if any.
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*/
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hBmp = (HBITMAP)DF_GET_BMPHANDLE;
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if (hBmp)
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DeleteObject(hBmp);
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return 0;
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case WM_SYSCOLORCHANGE:
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InvalidateRect(hWnd, NULL, TRUE);
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return 0;
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case WM_PAINT:
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return dfPaint(hWnd);
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/* Custom Control Messages */
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case DF_PM_SETBITMAP:
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return dfSetBitmap(hWnd, (HBITMAP)wParam, (HPALETTE)lParam);
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}
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return DefWindowProc(hWnd, wMessage, wParam, lParam);
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}
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/*
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**************************************************************************
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* dfDrawRect
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*
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* Description: Draws background of control window.
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*
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* Params:
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* HWND hWnd - handle to control window.
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* RECT rFrame - bounding rectangle.
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*
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* Returns: BOOL
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* Pass/Fail indicator 0 indicates failure.
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**************************************************************************
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*/
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BOOL dfDrawRect(HDC hdcRect, RECT rFrame)
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{
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HANDLE hBrush;
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HANDLE hOldBrush;
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HANDLE hPen;
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HANDLE hOldPen;
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HANDLE hPen3DHILIGHT;
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/* Get DC's pen and brush for frame redraw
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*/
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hBrush = CreateSolidBrush(GetSysColor(COLOR_3DFACE));
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if (!hBrush)
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return FALSE;
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hPen = CreatePen(PS_SOLID, 2, GetSysColor(COLOR_WINDOWFRAME));
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if (!hPen)
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{
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DeleteObject(hBrush);
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return FALSE;
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}
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hPen3DHILIGHT = CreatePen(PS_SOLID, 2, GetSysColor(COLOR_3DHILIGHT));
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if (!hPen3DHILIGHT)
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{
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DeleteObject(hBrush);
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DeleteObject(hPen);
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return FALSE;
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}
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hOldBrush = SelectObject(hdcRect, hBrush);
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//hOldPen = SelectObject(hdcRect, hPen);
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hOldPen = SelectObject(hdcRect, hPen3DHILIGHT);
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/* paint the window.
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*/
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//Rectangle(hdcRect, rFrame.left, rFrame.top, rFrame.right,
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// rFrame.bottom);
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MoveToEx(hdcRect, rFrame.left,rFrame.bottom, NULL);
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LineTo(hdcRect, rFrame.right,rFrame.bottom);
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LineTo(hdcRect, rFrame.right,rFrame.top);
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SelectObject(hdcRect, hPen);
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LineTo(hdcRect, rFrame.left,rFrame.top);
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LineTo(hdcRect, rFrame.left,rFrame.bottom);
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SelectObject(hdcRect, hOldPen);
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SelectObject(hdcRect, hOldBrush);
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/*clean up brush and pen */
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//DeleteObject();
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DeleteObject(hBrush);
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DeleteObject(hPen3DHILIGHT);
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DeleteObject(hPen);
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return TRUE;
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}
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/*
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**************************************************************************
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* dfPaint
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*
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* Description: Paints background and bitmap, if any.
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*
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* Params:
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* HWND hWnd - handle to control window
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*
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* Returns: LONG
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* 0 if OK, -1 otherwise. (for windproc return)
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*
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**************************************************************************
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*/
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LONG PASCAL dfPaint(HWND hWnd)
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{
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HBITMAP hBmp;
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HBITMAP hPrev;
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RECT rFrame;
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PAINTSTRUCT ps;
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HDC hdcMem;
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BITMAP bmp;
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int x, y, dx, dy;
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/* Setup to do the painting
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*/
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if(!GetUpdateRect(hWnd,NULL,FALSE))
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return 0L;
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BeginPaint(hWnd, &ps);
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GetClientRect(hWnd, &rFrame);
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hBmp = (HBITMAP)DF_GET_BMPHANDLE;
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if (hBmp)
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{
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hdcMem = CreateCompatibleDC(ps.hdc);
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if (!hdcMem)
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{
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EndPaint(hWnd, &ps);
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return -1L;
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}
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hPrev = SelectObject(hdcMem, hBmp);
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/* Get the size of the bitmap to center it in the frame.
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*/
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GetObject(hBmp, sizeof(BITMAP), (LPTSTR)&bmp);
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if (bmp.bmWidth > (rFrame.right-rFrame.left))
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{
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x = 0;
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dx = rFrame.right-rFrame.left;
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}
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else
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{
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x = ((rFrame.right-rFrame.left - bmp.bmWidth) >> 1);
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dx = bmp.bmWidth;
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}
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if (bmp.bmHeight > (rFrame.bottom-rFrame.top))
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{
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y = 0;
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dy = rFrame.bottom-rFrame.top;
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}
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else
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{
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y = ((rFrame.bottom-rFrame.top - bmp.bmHeight) >> 1);
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dy = bmp.bmHeight;
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}
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/* Draw the frame & background, then blt in the bitmap.
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*/
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dfDrawRect(ps.hdc, rFrame);
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BitBlt(ps.hdc, x, y, dx, dy, hdcMem, 0, 0, SRCCOPY);
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/* Cleanup and exit.
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*/
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SelectObject(hdcMem, hPrev);
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DeleteDC(hdcMem);
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}
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else
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/* if no bitmap, just repaint the background.
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*/
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dfDrawRect(ps.hdc, rFrame);
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EndPaint(hWnd, &ps);
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return 0L;
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}
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/*
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**************************************************************************
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* dfSetBitmap
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*
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* Description: Load a new bitmap into the control.
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*
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* Arguments:
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* HWND hWnd - handle to control window.
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* HBITMAP hBmpNew - handle to new bitmap.
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* HPALETTE hPalNew - handle to new bitmap's palette (Optional).
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* Returns: LONG
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* 0 for success; -1 if fails (for return by wndproc).
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*
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**************************************************************************
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*/
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LONG PASCAL dfSetBitmap(HWND hWnd, HBITMAP hBmpNew, HPALETTE hPalNew)
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{
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HBITMAP hBmp;
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HANDLE hPrev;
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HANDLE hPrevNew;
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HDC hdcMem;
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HDC hdcNew;
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HDC hDC;
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RECT rFrame;
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int dx, dy;
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BITMAP bmp;
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/* Cleanup any existing bitmap & palette
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*/
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hBmp = (HBITMAP)DF_GET_BMPHANDLE;
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if (hBmp)
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DeleteObject(hBmp);
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DF_SET_BMPHANDLE(0);
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DF_SET_BMPPAL(0);
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InvalidateRect(hWnd, NULL, TRUE);
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/* Copy the displayable portion of the bitmap into a private copy.
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*/
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if (hBmpNew)
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{
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/* get all the req'd DC's etc.
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*/
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hDC = GetDC(hWnd);
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hdcMem = CreateCompatibleDC(hDC);
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if (!hdcMem)
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{
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ReleaseDC(hWnd, hDC);
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return -1L;
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}
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hdcNew = CreateCompatibleDC(hDC);
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if (!hdcNew)
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{
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ReleaseDC(hWnd, hDC);
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return -1L;
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}
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GetObject(hBmpNew, sizeof(BITMAP), (LPTSTR)&bmp);
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hBmp = CreateCompatibleBitmap(hDC, bmp.bmWidth, bmp.bmHeight);
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if (!hBmp)
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{
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DeleteDC(hdcMem);
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DeleteDC(hdcNew);
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ReleaseDC(hWnd, hDC);
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return -1L;
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}
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hPrevNew = SelectObject(hdcNew, hBmpNew);
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hPrev = SelectObject(hdcMem, hBmp);
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/* figure out how much of the bitmap we need to copy.
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*/
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GetClientRect(hWnd, &rFrame);
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if (bmp.bmWidth > (rFrame.right-rFrame.left))
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dx = rFrame.right-rFrame.left;
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else
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dx = bmp.bmWidth;
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if (bmp.bmHeight > (rFrame.bottom-rFrame.top))
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dy = rFrame.bottom-rFrame.top;
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else
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dy = bmp.bmHeight;
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/* copy the bitmap.
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*/
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BitBlt(hdcMem, 0, 0, dx, dy, hdcNew, 0 , 0, SRCCOPY);
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/* cleanup
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*/
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hBmp = SelectObject(hdcMem, hPrev);
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DF_SET_BMPHANDLE(hBmp);
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DeleteDC(hdcMem);
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SelectObject(hdcNew, hPrevNew);
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DeleteDC(hdcNew);
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ReleaseDC(hWnd, hDC);
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/* if a palette is handed in, store it too.
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*/
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DF_SET_BMPPAL(hPalNew);
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}
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return 0L;
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}
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