public void ResizeAllPages(int newWidth, int newHeight)
{
physicalCanvasCollection.Dispose(); physicalCanvasCollection.ResizeAllPages(newWidth, newHeight);
render_parts = 0;
if (pageA != null)
{
pageA.IsUnused = true;
pageA = null;
}
if (pageB != null)
{
pageB.IsUnused = true;
pageB = null;
}
if (pageC != null)
{
pageC.IsUnused = true;
pageC = null;
}
if (pageD != null)
{
pageD.IsUnused = true;
pageD = null;
}
}
public GdiPlusDrawBoard GetCanvasPage(int hPageNum, int vPageNum)
{
int j = cachePages.Count;
for (int i = j - 1; i > -1; i--)
{
GdiPlusDrawBoard page = cachePages[i];
if (page.IsPageNumber(hPageNum, vPageNum))
{
cachePages.RemoveAt(i);
if (page.DimensionInvalid)
{
page.Reset(hPageNum, vPageNum, eachPageWidth, eachPageHeight);
page.IsUnused = false;
}
return(page);
}
}
if (j >= numOfCachePages)
{
GdiPlusDrawBoard page = cachePages[0];
cachePages.RemoveAt(0);
page.IsUnused = false;
if (page.DimensionInvalid)
{
page.Reset(hPageNum, vPageNum, eachPageWidth, eachPageHeight);
}
else
{
page.Reuse(hPageNum, vPageNum);
}
Rectangle rect = page.Rect;
page.Invalidate(rect);
return(page);
}
else
{
return(new GdiPlusDrawBoard(0, 0, eachPageWidth, eachPageHeight));
//return (MyGdiPlusCanvas)LayoutFarm.UI.GdiPlus.MyWinGdiPortal.P.CreateCanvas(
// 0, 0, eachPageWidth, eachPageHeight);
//PixelFarm.Drawing.WinGdi.WinGdiPlusPlatform
//return new MyGdiPlusCanvas(
// hPageNum,
// vPageNum,
// hPageNum * eachPageWidth,
// eachPageHeight * vPageNum,
// eachPageWidth,
// eachPageHeight);
}
}
static void UpdateInvalidArea(GdiPlusDrawBoard mycanvas, IRenderElement rootElement)
{
mycanvas.OffsetCanvasOrigin(-mycanvas.Left, -mycanvas.Top);
Rectangle rect = mycanvas.InvalidateArea;
rootElement.DrawToThisCanvas(mycanvas, rect);
#if DEBUG
rootElement.dbugShowRenderPart(mycanvas, rect);
#endif
mycanvas.IsContentReady = true;
mycanvas.OffsetCanvasOrigin(mycanvas.Left, mycanvas.Top);
}
static void UpdateAllArea(GdiPlusDrawBoard mycanvas, IRenderElement topWindowRenderBox)
{
mycanvas.OffsetCanvasOrigin(-mycanvas.Left, -mycanvas.Top);
Rectangle rect = mycanvas.Rect;
topWindowRenderBox.DrawToThisCanvas(mycanvas, rect);
#if DEBUG
topWindowRenderBox.dbugShowRenderPart(mycanvas, rect);
#endif
mycanvas.IsContentReady = true;
mycanvas.OffsetCanvasOrigin(mycanvas.Left, mycanvas.Top);
}
public void ReleasePage(GdiPlusDrawBoard page)
{
page.IsUnused = true;
cachePages.Add(page);
}
public void CalculateCanvasPages(int viewportX, int viewportY, int viewportWidth, int viewportHeight)
{
int firstVerticalPageNum = viewportY / physicalCanvasCollection.EachPageHeight;
int firstHorizontalPageNum = viewportX / physicalCanvasCollection.EachPageWidth;
render_parts = PAGE_A;
if (pageA == null)
{
pageA = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum, firstVerticalPageNum);
}
else
{
if (!pageA.IsPageNumber(firstHorizontalPageNum, firstVerticalPageNum))
{
physicalCanvasCollection.ReleasePage(pageA);
pageA = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum, firstVerticalPageNum);
}
}
if (pageA.Right >= viewportX + viewportWidth)
{
if (pageC != null)
{
physicalCanvasCollection.ReleasePage(pageC);
pageC = null;
}
}
else
{
if (pageC == null)
{
pageC = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum + 1, firstVerticalPageNum);
}
else
{
if (!pageC.IsPageNumber(firstHorizontalPageNum + 1, firstVerticalPageNum))
{
physicalCanvasCollection.ReleasePage(pageC);
pageC = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum + 1, firstVerticalPageNum);
}
}
render_parts |= PAGE_AC;
}
if (pageA.Bottom >= viewportY + viewportHeight)
{
if (pageB != null)
{
physicalCanvasCollection.ReleasePage(pageB);
pageB = null;
}
}
else
{
render_parts |= PAGE_AB;
if (pageB == null)
{
pageB = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum, firstVerticalPageNum + 1);
}
else
{
if (!pageB.IsPageNumber(firstHorizontalPageNum, firstVerticalPageNum + 1))
{
physicalCanvasCollection.ReleasePage(pageB);
pageB = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum, firstVerticalPageNum + 1);
}
}
if (pageC != null)
{
render_parts = PAGE_ABCD;
if (pageD == null)
{
pageD = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum + 1, firstVerticalPageNum + 1);
}
else
{
if (!pageD.IsPageNumber(firstHorizontalPageNum + 1, firstVerticalPageNum + 1))
{
physicalCanvasCollection.ReleasePage(pageD);
pageD = physicalCanvasCollection.GetCanvasPage(firstHorizontalPageNum + 1, firstVerticalPageNum + 1);
}
}
}
else
{
if (pageD != null)
{
physicalCanvasCollection.ReleasePage(pageD);
pageD = null;
}
}
}
}