////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 大小改变
VOID CChildWnd::OnSize(WPARAM wParam, LPARAM lParam)
{
RECT rtRect;
INT iToolbar;
INT iStatusBar;
SIZE sizeToolbar;
// 如果指定要获取窗口大小
if (lParam == 0)
{
GetClientRect(m_hWnd, &rtRect);
lParam = MAKELONG(_RectWidth(rtRect), _RectHeight(rtRect));
}
// 获取工具栏和状态栏的高度
if (CMainWnd::IsMenuChecked(IDM_View_Toolbar))
{
ShowWindow(m_hToolbar, SW_SHOW);
GetWindowRect(m_hToolbar, &rtRect);
iToolbar = _RectHeight(rtRect);
}
else
{
ShowWindow(m_hToolbar, SW_HIDE);
iToolbar = 0;
}
if (CMainWnd::IsMenuChecked(IDM_View_StatusBar))
{
ShowWindow(m_hStatusBar, SW_SHOW);
GetWindowRect(m_hStatusBar, &rtRect);
iStatusBar = _RectHeight(rtRect);
}
else
{
ShowWindow(m_hStatusBar, SW_HIDE);
iStatusBar = 0;
}
// 调整播放窗口大小及位置
MoveWindow(m_hPlayWnd, 0, iToolbar, LOWORD(lParam), HIWORD(lParam) - iToolbar - iStatusBar, TRUE);
SetDrawRect();
// 调整状态栏大小及位置
AdjustStatusBar(wParam, lParam);
// 调整工具栏大小及位置
SendMessage(m_hToolbar, TB_AUTOSIZE, 0, 0);
// 调整定位栏的大小
SendMessage(m_hToolbar, TB_GETMAXSIZE, 0, (LPARAM) &sizeToolbar);
MoveWindow(m_hSeekBar, sizeToolbar.cx, 1, LOWORD(lParam) - sizeToolbar.cx, sizeToolbar.cy - 2, TRUE);
// 调整客户窗口边框
if (m_hWnd == CClientWnd::GetActive())
{
CClientWnd::SetEdge(wParam != SIZE_MAXIMIZED);
}
}
void CDTDisplay::SetScrollExtend()
{
RECT rc;
GetClientRect(&rc);
if(0 == m_Scale)
{
m_WndHeight = rc.bottom - rc.top;
m_WndWidth = rc.right - rc.left;
}
else
{//The Content size thould the bigger one of Windows' client area and the Image Size
m_WndHeight = m_Height*sqrt((float)m_Scale) + DISP_BLANK_H;
if(m_WndHeight<(rc.bottom - rc.top))
m_WndHeight = rc.bottom - rc.top;
m_WndWidth = m_Width*sqrt((float)m_Scale) + DISP_BLANK_W;
if(m_WndWidth < (rc.right - rc.left))
m_WndWidth = rc.right - rc.left;
}
SetDrawRect();
}
void CDrawCommon::DrawBitmap(CBitmap & bitmap, CPoint start_point, CSize size, StretchMode stretch_mode)
{
CDC memDC;
//获取图像实际大小
BITMAP bm;
GetObject(bitmap, sizeof(BITMAP), &bm);
memDC.CreateCompatibleDC(m_pDC);
memDC.SelectObject(&bitmap);
// 以下两行避免图片失真
m_pDC->SetStretchBltMode(HALFTONE);
m_pDC->SetBrushOrg(0, 0);
CSize draw_size;
if (size.cx == 0 || size.cy == 0) //如果指定的size为0，则使用位图的实际大小绘制
{
draw_size = CSize(bm.bmWidth, bm.bmHeight);
}
else
{
draw_size = size;
if (stretch_mode == StretchMode::FILL)
{
SetDrawRect(CRect(start_point, draw_size));
float w_h_radio, w_h_radio_draw; //图像的宽高比、绘制大小的宽高比
w_h_radio = static_cast<float>(bm.bmWidth) / bm.bmHeight;
w_h_radio_draw = static_cast<float>(size.cx) / size.cy;
if (w_h_radio > w_h_radio_draw) //如果图像的宽高比大于绘制区域的宽高比，则需要裁剪两边的图像
{
int image_width; //按比例缩放后的宽度
image_width = bm.bmWidth * draw_size.cy / bm.bmHeight;
start_point.x -= ((image_width - draw_size.cx) / 2);
draw_size.cx = image_width;
}
else
{
int image_height; //按比例缩放后的高度
image_height = bm.bmHeight * draw_size.cx / bm.bmWidth;
start_point.y -= ((image_height - draw_size.cy) / 2);
draw_size.cy = image_height;
}
}
else if (stretch_mode == StretchMode::FIT)
{
draw_size = CSize(bm.bmWidth, bm.bmHeight);
float w_h_radio, w_h_radio_draw; //图像的宽高比、绘制大小的宽高比
w_h_radio = static_cast<float>(bm.bmWidth) / bm.bmHeight;
w_h_radio_draw = static_cast<float>(size.cx) / size.cy;
if (w_h_radio > w_h_radio_draw) //如果图像的宽高比大于绘制区域的宽高比
{
draw_size.cy = draw_size.cy * size.cx / draw_size.cx;
draw_size.cx = size.cx;
start_point.y += ((size.cy - draw_size.cy) / 2);
}
else
{
draw_size.cx = draw_size.cx * size.cy / draw_size.cy;
draw_size.cy = size.cy;
start_point.x += ((size.cx - draw_size.cx) / 2);
}
}
}
m_pDC->StretchBlt(start_point.x, start_point.y, draw_size.cx, draw_size.cy, &memDC, 0, 0, bm.bmWidth, bm.bmHeight, SRCCOPY);
memDC.DeleteDC();
}
void CMMABitmapWindow::SetDrawRectThread(const TRect& aRect)
{
// Bitmap window's rect can be set in any thread.
SetDrawRect(aRect);
}