/// <summary>
/// Creates new memory DC and bitmap of specified size and selects it into the DC.
/// Returns false if failed.
/// In any case deletes previous bitmap and DC.
/// </summary>
/// <param name="width">Width, pixels. Must be > 0.</param>
/// <param name="height">Height, pixels. Must be > 0.</param>
public bool Create(int width, int height)
{
if (_disposed)
{
throw new ObjectDisposedException(nameof(MemoryBitmap));
}
using var dcs = new ScreenDC_();
Attach(Api.CreateCompatibleBitmap(dcs, width, height));
return(_bm != default);
}
/// <summary>
/// Gets color of a screen pixel.
/// </summary>
/// <param name="p">x y in screen.</param>
/// <returns>Pixel color in 0xAARRGGBB format. Alpha 0xFF. Returns 0 if fails, eg if x y is not in screen.</returns>
/// <remarks>
/// Uses, API <msdn>GetPixel</msdn>. It is slow. If need faster, try <see cref="getPixels(wnd, RECT, bool)"/> (get 1 or more pixels from window client area).
/// </remarks>
/// <example>
/// <code><![CDATA[
/// //print.clear();
/// //for (;;) {
/// // 1.s();
/// // print.it(uiimage.getPixel(mouse.xy));
/// //}
/// ]]></code>
/// </example>
public static unsafe uint getPixel(POINT p)
{
using var dc = new ScreenDC_();
//using var dc = new WindowDC_(wnd.getwnd.root); //same speed. Same with printwindow.
uint R = Api.GetPixel(dc, p.x, p.y);
if (R == 0xFFFFFFFF)
{
return(0); //it's better than exception
}
return(ColorInt.SwapRB(R) | 0xFF000000);
}
public NativeFont_(string name, int height, FontStyle style = default, bool calculateHeightOnScreen = false)
{
using var dcs = new ScreenDC_(0);
int h2 = -AMath.MulDiv(height, Api.GetDeviceCaps(dcs, 90), 72); //LOGPIXELSY=90
Handle = Api.CreateFont(h2,
cWeight: style.Has(FontStyle.Bold) ? 700 : 0, //FW_BOLD
bItalic: style.Has(FontStyle.Italic) ? 1 : 0,
bUnderline: style.Has(FontStyle.Underline) ? 1 : 0,
bStrikeOut: style.Has(FontStyle.Strikeout) ? 1 : 0,
iCharSet: 1,
pszFaceName: name);
if (calculateHeightOnScreen)
{
using var dcMem = new CompatibleDC_(dcs);
var of = Api.SelectObject(dcMem, Handle);
Api.GetTextExtentPoint32(dcMem, "A", 1, out var z);
HeightOnScreen = z.height;
Api.SelectObject(dcMem, of);
}
}
/// <summary>
/// Creates Bitmap from a GDI bitmap.
/// </summary>
/// <param name="hbitmap">GDI bitmap handle. This function makes its copy.</param>
/// <remarks>
/// How this function is different from <see cref="Image.FromHbitmap"/>:
/// 1. Image.FromHbitmap usually creates bottom-up bitmap, which is incompatible with <see cref="Find"/>. This function creates normal top-down bitmap, like <c>new Bitmap(...)</c>, <c>Bitmap.FromFile(...)</c> etc do.
/// 2. This function always creates bitmap of PixelFormat Format32bppRgb.
/// </remarks>
/// <exception cref="AuException">Failed. For example hbitmap is default(IntPtr).</exception>
/// <exception cref="Exception">Exceptions of Bitmap(int, int, PixelFormat) constructor.</exception>
public static unsafe Bitmap BitmapFromHbitmap(IntPtr hbitmap)
{
var bh = new Api.BITMAPINFOHEADER()
{
biSize = sizeof(Api.BITMAPINFOHEADER)
};
using (var dcs = new ScreenDC_(0)) {
if (0 == Api.GetDIBits(dcs, hbitmap, 0, 0, null, &bh, 0))
{
goto ge;
}
int wid = bh.biWidth, hei = bh.biHeight;
if (hei > 0)
{
bh.biHeight = -bh.biHeight;
}
else
{
hei = -hei;
}
bh.biBitCount = 32;
var R = new Bitmap(wid, hei, PixelFormat.Format32bppRgb);
var d = R.LockBits(new Rectangle(0, 0, wid, hei), ImageLockMode.ReadWrite, R.PixelFormat);
bool ok = hei == Api.GetDIBits(dcs, hbitmap, 0, hei, (void *)d.Scan0, &bh, 0);
R.UnlockBits(d);
if (!ok)
{
R.Dispose(); goto ge;
}
return(R);
}
ge:
throw new AuException();
}
public _Metrics(popupMenu m)
{
foreach (var b in m._a)
{
if (b.IsSeparator)
{
hasSeparators = true;
}
else
{
if (b.HasImage_)
{
hasImages = true;
}
if (b.checkType > 0)
{
hasCheck = true;
}
if (b.IsSubmenu)
{
hasSubmenus = true;
}
if (b.Hotkey != null)
{
hasHotkeys = true;
}
}
}
int dpi = m._dpi;
bBorder = dpi / 96;
textPaddingX = Dpi.Scale(8, dpi);
textPaddingY = Dpi.Scale(1, dpi);
if (hasImages)
{
image = Dpi.Scale(16, dpi);
}
if (hasCheck)
{
check = Dpi.Scale(18, dpi);
}
if (hasSubmenus)
{
submenu = Dpi.Scale(16, dpi);
}
separator = Dpi.Scale(8, dpi);
sepLine = 2;
theme = Api.OpenThemeData(m._w, "Menu");
if (theme != default)
{
using var dc = new ScreenDC_();
if (hasSubmenus)
{
Api.GetThemePartSize(theme, dc, 16, 1, null, Api.THEMESIZE.TS_TRUE, out zSubmenu);
submenu = Math.Max(submenu, zSubmenu.width + submenu / 4);
}
if (hasCheck)
{
Api.GetThemePartSize(theme, dc, 11, 1, null, Api.THEMESIZE.TS_TRUE, out zCheck);
check = Math.Max(check, zCheck.width + 2);
}
if (hasSeparators && 0 == Api.GetThemePartSize(theme, dc, 15, 0, null, Api.THEMESIZE.TS_TRUE, out var k))
{
sepLine = k.height;
}
}
submenuMargin = hasHotkeys ? 0 : submenu;
}
