OBJFDBK.C
/*
* OBJFDBK.C
*
* Miscellaneous API's to generate UI feedback effects for OLE objects. This
* is part of the OLE 2.0 User Interface Support Library.
* The following feedback effects are supported:
* 1. Object selection handles (OleUIDrawHandles)
* 2. Open Object window shading (OleUIDrawShading)
*
* Copyright (c)1992-1996 Microsoft Corporation, All Right Reserved
*/
#define STRICT 1
#include "olestd.h"
static void DrawHandle(HDC hdc, int x, int y, UINT cSize, BOOL bInvert, BOOL fDraw);
/*
* OleUIDrawHandles
*
* Purpose:
* Draw handles or/and boundary around Container Object when selected
*
* Parameters:
* lpRect Dimensions of Container Object
* hdc HDC of Container Object (MM_TEXT mapping mode)
* dwFlags-
* Exclusive flags
* OLEUI_HANDLES_INSIDE Draw handles on inside of rect
* OLEUI_HANDLES_OUTSIDE Draw handles on outside of rect
* Optional flags
* OLEUI_HANDLES_NOBORDER Draw handles only, no rect
* OLEUI_HANDLES_USEINVERSE
* use invert for handles and rect, o.t. use COLOR_WINDOWTEXT
* cSize size of handle box
* fDraw Draw if TRUE, erase if FALSE
*
* Return Value: null
*
*/
STDAPI_(void) OleUIDrawHandles(
LPRECT lpRect,
HDC hdc,
DWORD dwFlags,
UINT cSize,
BOOL fDraw
)
{
HBRUSH hbr;
RECT rc;
int bkmodeOld;
BOOL bInvert = (BOOL) (dwFlags & OLEUI_HANDLES_USEINVERSE);
CopyRect((LPRECT)&rc, lpRect);
bkmodeOld = SetBkMode(hdc, TRANSPARENT);
if (dwFlags & OLEUI_HANDLES_OUTSIDE)
InflateRect((LPRECT)&rc, cSize - 1, cSize - 1);
// Draw the handles inside the rectangle boundary
DrawHandle(hdc, rc.left, rc.top, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.left, rc.top+(rc.bottom-rc.top-cSize)/2, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.left, rc.bottom-cSize, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.left+(rc.right-rc.left-cSize)/2, rc.top, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.left+(rc.right-rc.left-cSize)/2, rc.bottom-cSize, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.right-cSize, rc.top, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.right-cSize, rc.top+(rc.bottom-rc.top-cSize)/2, cSize, bInvert, fDraw);
DrawHandle(hdc, rc.right-cSize, rc.bottom-cSize, cSize, bInvert, fDraw);
if (!(dwFlags & OLEUI_HANDLES_NOBORDER)) {
if (fDraw)
hbr = GetStockObject(BLACK_BRUSH);
else
hbr = GetStockObject(WHITE_BRUSH);
FrameRect(hdc, lpRect, hbr);
}
SetBkMode(hdc, bkmodeOld);
}
/*
* DrawHandle
*
* Purpose:
* Draw a handle box at the specified coordinate
*
* Parameters:
* hdc HDC to be drawn into
* x, y upper left corner coordinate of the handle box
* cSize size of handle box
* bInvert use InvertRect() if TRUE, otherwise use Rectangle()
* fDraw Draw if TRUE, erase if FALSE, ignored if bInvert is TRUE
*
* Return Value: null
*
*/
static void DrawHandle(HDC hdc, int x, int y, UINT cSize, BOOL bInvert, BOOL fDraw)
{
HBRUSH hbr;
HBRUSH hbrOld;
HPEN hpen;
HPEN hpenOld;
RECT rc;
if (!bInvert) {
if (fDraw) {
hpen = GetStockObject(BLACK_PEN);
hbr = GetStockObject(BLACK_BRUSH);
} else {
hpen = GetStockObject(WHITE_PEN);
hbr = GetStockObject(WHITE_PEN);
}
hpenOld = SelectObject(hdc, hpen);
hbrOld = SelectObject(hdc, hbr);
Rectangle(hdc, x, y, x+cSize, y+cSize);
SelectObject(hdc, hpenOld);
SelectObject(hdc, hbrOld);
}
else {
rc.left = x;
rc.top = y;
rc.right = x + cSize;
rc.bottom = y + cSize;
InvertRect(hdc, (LPRECT)&rc);
}
}
/*
* OleUIDrawShading
*
* Purpose:
* Shade the object when it is in in-place editing. Borders are drawn
* on the Object rectangle. The right and bottom edge of the rectangle
* are excluded in the drawing.
*
* Parameters:
* lpRect Dimensions of Container Object
* hdc HDC for drawing
* dwFlags-
* Exclusive flags
* OLEUI_SHADE_FULLRECT Shade the whole rectangle
* OLEUI_SHADE_BORDERIN Shade cWidth pixels inside rect
* OLEUI_SHADE_BORDEROUT Shade cWidth pixels outside rect
* Optional flags
* OLEUI_SHADE_USEINVERSE
* use PATINVERT instead of the hex value
* cWidth width of border in pixel
*
* Return Value: null
*
*/
STDAPI_(void) OleUIDrawShading(LPRECT lpRect, HDC hdc, DWORD dwFlags, UINT cWidth)
{
HBRUSH hbr;
HBRUSH hbrOld;
HBITMAP hbm;
RECT rc;
WORD wHatchBmp[] = {0x11, 0x22, 0x44, 0x88, 0x11, 0x22, 0x44, 0x88};
COLORREF cvText;
COLORREF cvBk;
hbm = CreateBitmap(8, 8, 1, 1, wHatchBmp);
hbr = CreatePatternBrush(hbm);
hbrOld = SelectObject(hdc, hbr);
rc = *lpRect;
if (dwFlags == OLEUI_SHADE_FULLRECT) {
cvText = SetTextColor(hdc, RGB(255, 255, 255));
cvBk = SetBkColor(hdc, RGB(0, 0, 0));
PatBlt(hdc, rc.left, rc.top, rc.right-rc.left, rc.bottom-rc.top,
0x00A000C9L /* DPa */ );
} else { // either inside or outside rect
if (dwFlags == OLEUI_SHADE_BORDEROUT)
InflateRect((LPRECT)&rc, cWidth - 1, cWidth - 1);
cvText = SetTextColor(hdc, RGB(255, 255, 255));
cvBk = SetBkColor(hdc, RGB(0, 0, 0));
PatBlt(hdc, rc.left, rc.top, rc.right - rc.left,
cWidth, 0x00A000C9L /* DPa */);
PatBlt(hdc, rc.left, rc.top, cWidth, rc.bottom - rc.top,
0x00A000C9L /* DPa */);
PatBlt(hdc, rc.right - cWidth, rc.top, cWidth,
rc.bottom - rc.top, 0x00A000C9L /* DPa */);
PatBlt(hdc, rc.left, rc.bottom - cWidth, rc.right-rc.left,
cWidth, 0x00A000C9L /* DPa */);
}
SetTextColor(hdc, cvText);
SetBkColor(hdc, cvBk);
SelectObject(hdc, hbrOld);
DeleteObject(hbr);
DeleteObject(hbm);
}
/*
* OleUIShowObject
*
* Purpose:
* Draw the ShowObject effect around the object
*
* Parameters:
* lprc rectangle for drawing
* hdc HDC for drawing
* fIsLink linked object (TRUE) or embedding object (FALSE)
*
* Return Value: null
*
*/
STDAPI_(void) OleUIShowObject(LPCRECT lprc, HDC hdc, BOOL fIsLink)
{
HPEN hpen;
HPEN hpenOld;
HBRUSH hbrOld;
if (!lprc || !hdc)
return;
hpen = fIsLink ? CreatePen(PS_DASH, 1, RGB(0,0,0)) :
GetStockObject(BLACK_PEN);
if (!hpen)
return;
hpenOld = SelectObject(hdc, hpen);
hbrOld = SelectObject(hdc, GetStockObject(NULL_BRUSH));
Rectangle(hdc, lprc->left, lprc->top, lprc->right, lprc->bottom);
SelectObject(hdc, hpenOld);
SelectObject(hdc, hbrOld);
if (fIsLink)
DeleteObject(hpen);
}