Форум: "Основная";
Текущий архив: 2006.11.19;
Скачать: [xml.tar.bz2];
ВнизИспользование иконок различного размера Найти похожие ветки
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Icon (2006-10-03 15:03) [0]Есть файл ico содержащий несколько иконок от 16x16 до 128x128. Есть ли возможность отобразить это дело в TImage, например? Установка Image.Picture.Icon.(Width/Height) не помогает.
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Ketmar © (2006-10-03 15:11) [1]DrawIcon()?
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clickmaker © (2006-10-03 15:26) [2]DrawIconEx
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Icon (2006-10-03 15:28) [3]2 Ketmar
Наверное действительно придётся в API лезть. Я думал, может средствами VCL можно сделать, просто я не догоняю чего-то.
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Icon (2006-10-03 15:30) [4]Ясно. Спасибо всем. В общем я примерно так и думал. Халявы захотелось :)
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Ketmar © (2006-10-03 15:33) [5]>[2] clickmaker(c) 3-Oct-2006, 15:26
>DrawIconEx
оно там рядом. сути это не меняет. %-)
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Rouse_ © (2006-10-04 09:14) [6]
uses
Consts, RTLConsts;
var
FIconDir: TCursorOrIcon;
FIconDirectoryEntry: array of TIconDirectoryEntry;
FCustomIcon: HBITMAP;
procedure OutOfResources;
begin
raise EOutOfResources.Create(SOutOfResources);
end;
procedure GDIError;
var
ErrorCode: Integer;
Buf: array [Byte] of Char;
begin
ErrorCode := GetLastError;
if (ErrorCode <> 0) and (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, nil,
ErrorCode, LOCALE_USER_DEFAULT, Buf, sizeof(Buf), nil) <> 0) then
raise EOutOfResources.Create(Buf)
else
OutOfResources;
end;
procedure TwoBitsFromDIB(var BI: TBitmapInfoHeader; var XorBits, AndBits: HBITMAP;
const IconSize: TPoint);
function GetDInColors(BitCount: Word): Integer;
begin
case BitCount of
1, 4, 8: Result := 1 shl BitCount;
else
Result := 0;
end;
end;
function GDICheck(Value: Integer): Integer;
begin
if Value = 0 then GDIError;
Result := Value;
end;
function DupBits(Src: HBITMAP; Size: TPoint; Mono: Boolean): HBITMAP;
var
DC, Mem1, Mem2: HDC;
Old1, Old2: HBITMAP;
Bitmap: Windows.TBitmap;
begin
Mem1 := CreateCompatibleDC(0);
Mem2 := CreateCompatibleDC(0);
try
GetObject(Src, SizeOf(Bitmap), @Bitmap);
if Mono then
Result := CreateBitmap(Size.X, Size.Y, 1, 1, nil)
else
begin
DC := GetDC(0);
if DC = 0 then GDIError;
try
Result := CreateCompatibleBitmap(DC, Size.X, Size.Y);
if Result = 0 then GDIError;
finally
ReleaseDC(0, DC);
end;
end;
if Result <> 0 then
begin
Old1 := SelectObject(Mem1, Src);
Old2 := SelectObject(Mem2, Result);
StretchBlt(Mem2, 0, 0, Size.X, Size.Y, Mem1, 0, 0, Bitmap.bmWidth,
Bitmap.bmHeight, SrcCopy);
if Old1 <> 0 then SelectObject(Mem1, Old1);
if Old2 <> 0 then SelectObject(Mem2, Old2);
end;
finally
DeleteDC(Mem1);
DeleteDC(Mem2);
end;
end;
type
PLongArray = ^TLongArray;
TLongArray = array[0..1] of Longint;
var
Temp: HBITMAP;
NumColors: Integer;
DC: HDC;
Bits: Pointer;
Colors: PLongArray;
begin
with BI do
begin
biHeight := biHeight shr 1;
biSizeImage := BytesPerScanline(biWidth, biBitCount, 32) * biHeight;
NumColors := GetDInColors(biBitCount);
end;
DC := GetDC(0);
if DC = 0 then OutOfResources;
try
Bits := Pointer(Longint(@BI) + SizeOf(BI) + NumColors * SizeOf(TRGBQuad));
Temp := GDICheck(CreateDIBitmap(DC, BI, CBM_INIT, Bits, PBitmapInfo(@BI)^, DIB_RGB_COLORS));
try
XorBits := DupBits(Temp, IconSize, False);
finally
DeleteObject(Temp);
end;
with BI do
begin
Inc(Longint(Bits), biSizeImage);
biBitCount := 1;
biSizeImage := BytesPerScanline(biWidth, biBitCount, 32) * biHeight;
biClrUsed := 2;
biClrImportant := 2;
end;
Colors := Pointer(Longint(@BI) + SizeOf(BI));
Colors^[0] := 0;
Colors^[1] := $FFFFFF;
Temp := GDICheck(CreateDIBitmap(DC, BI, CBM_INIT, Bits, PBitmapInfo(@BI)^, DIB_RGB_COLORS));
try
AndBits := DupBits(Temp, IconSize, True);
finally
DeleteObject(Temp);
end;
finally
ReleaseDC(0, DC);
end;
end;
function GetIcon(DIBData: Pointer; IconSize: TPoint): HICON;
var
ResData: Pointer;
XorBits, AndBits: HBITMAP;
XorInfo, AndInfo: Windows.TBitmap;
XorMem, AndMem: Pointer;
XorLen, AndLen: Integer;
Length: Integer;
begin
TwoBitsFromDIB(PBitmapInfoHeader(DIBData)^, XorBits, AndBits, IconSize);
GetObject(AndBits, SizeOf(Windows.TBitmap), @AndInfo);
GetObject(XorBits, SizeOf(Windows.TBitmap), @XorInfo);
with AndInfo do
AndLen := bmWidthBytes * bmHeight * bmPlanes;
with XorInfo do
XorLen := bmWidthBytes * bmHeight * bmPlanes;
Length := AndLen + XorLen;
ResData := AllocMem(Length);
try
AndMem := ResData;
with AndInfo do
XorMem := Pointer(Longint(ResData) + AndLen);
GetBitmapBits(AndBits, AndLen, AndMem);
GetBitmapBits(XorBits, XorLen, XorMem);
DeleteObject(XorBits);
DeleteObject(AndBits);
Result := CreateIcon(HInstance, IconSize.X, IconSize.Y,
XorInfo.bmPlanes, XorInfo.bmBitsPixel, AndMem, XorMem);
if Result = 0 then GDIError;
finally
FreeMem(ResData, Length);
end;
end;
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Rouse_ © (2006-10-04 09:15) [7]после чего:
procedure TForm21.Button2Click(Sender: TObject);
var
Stream: TMemoryStream;
I: Integer;
ColorTable: array of Byte;
begin
Stream := TMemoryStream.Create;
try
Image1.Picture.Icon.SaveToStream(Stream);
Stream.Position := 0;
Stream.Read(FIconDir, SizeOf(TCursorOrIcon));
SetLength(FIconDirectoryEntry, FIconDir.Count);
for I := 0 to FIconDir.Count - 1 do
begin
Stream.Read(FIconDirectoryEntry[I], SizeOf(TIconDirectoryEntry));
Dec(FIconDirectoryEntry[I].bWidth, Byte(FIconDirectoryEntry[I].bWidth = 0));
Dec(FIconDirectoryEntry[I].bHeight, Byte(FIconDirectoryEntry[I].bHeight = 0));
end;
for I := 0 to FIconDir.Count - 1 do
begin
Stream.Position := FIconDirectoryEntry[I].dwImageOffset;
SetLength(ColorTable, FIconDirectoryEntry[I].dwBytesInRes);
Stream.Read(ColorTable[0], FIconDirectoryEntry[I].dwBytesInRes);
try
FCustomIcon := GetIcon(@ColorTable[0],
Point(FIconDirectoryEntry[I].bWidth, FIconDirectoryEntry[I].bHeight));
except
FCustomIcon := INVALID_HANDLE_VALUE;
end;
if FCustomIcon <> INVALID_HANDLE_VALUE then
DrawIconEx(Canvas.Handle, (FIconDir.Count * 60) - (I * 60), 350, FCustomIcon,
FIconDirectoryEntry[I].bWidth,
FIconDirectoryEntry[I].bHeight, 0, 0, DI_NORMAL);
end;
finally
Stream.Free;
end;
end;
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Vovan#1 (2006-10-04 23:02) [8]
unit unitIconClass;
interface
uses Windows, Classes, Sysutils, Graphics, Dialogs;
type
TDrawWhat = (dwCombined, dwXorMask, dwAndMask);
const
PixelCountMax = 32768;
type pRGBTriple = ^TRGBTriple;
TRGBTriple = packed record
rgbtBlue: Byte;
rgbtGreen: Byte;
rgbtRed: Byte;
end;
type pRGBQuad = ^TRGBQuad;
TRGBQuad = packed record
rgbBlue: Byte;
rgbGreen: Byte;
rgbRed: Byte;
rgbReserved: Byte;
end;
type
pRGBTripleArray = ^TRGBTripleArray;
TRGBTripleArray = array[0..PixelCountMax - 1] of TRGBTriple;
pRGBQuadArray = ^TRGBQuadArray;
TRGBQuadArray = array[0..PixelCountMax - 1] of TRGBQuad;
type
TIconHeader = packed record
idReserved: Word;
idType: Word;
idCount: Word;
end;
TIconDirEntry = packed record
bWidth: Byte;
bHeight: Byte;
bColorCount: Byte;
bReserved: Byte;
wPlanes: Word;
wBitCount: Word;
dwBytesInRes: Longint;
dwImageOffset: Longint;
end;
type
TIconClass = class
Loaded: Boolean;
CanvasHandle: HDC;
IconHeader: TIconHeader;
IconDirEntries: array of TIconDirEntry;
IconXorBitmaps: array of TBitmap;
IconAndBitmaps: array of TBitmap;
procedure LoadFromIconFile(Filename: string);
procedure Draw(x, y: Integer; Index: Integer;
DrawWhat: TDrawWhat; Bitmap: TBitmap);
destructor Destroy; override;
end;
function BlendColors(const Color1, Color2: TColor; Amount: Extended): TColor;
implementation
destructor TIconClass.Destroy;
var i: Integer;
begin
for i := Low(IconXorBitmaps) to High(IconXorBitmaps) do
IconXorBitmaps[i].Free;
for i := Low(IconAndBitmaps) to High(IconAndBitmaps) do
IconAndBitmaps[i].Free;
DeleteDC(CanvasHandle);
inherited Destroy;
end;
procedure TIconClass.LoadFromIconFile(Filename: string);
var FS: TFileStream;
ColorTable: array[0..0] of TRGBQuad;
BitmapInfoHeader: TBitmapInfoHeader;
BitmapInfo: TBitmapInfo;
BitmapBits: Pointer;
PalCount: Integer;
IconPalette: PLogPalette;
hIconPalette: HPALETTE;
i, k: Integer;
Ahdc: HDC;
begin
if not FileExists(Filename) then Exit;
FS := TFileStream.Create(Filename, fmOpenRead or fmShareExclusive);
try
FS.Read(IconHeader, SizeOf(TIconHeader));
SetLength(IconDirEntries, IconHeader.idCount);
for i := 1 to IconHeader.idCount do
FS.Read(IconDirEntries[i - 1], SizeOf(TIconDirEntry));
for i := Low(IconXorBitmaps) to High(IconXorBitmaps) do
IconXorBitmaps[i].Free;
SetLength(IconXorBitmaps, IconHeader.idCount);
for i := Low(IconAndBitmaps) to High(IconAndBitmaps) do
IconAndBitmaps[i].Free;
SetLength(IconAndBitmaps, IconHeader.idCount);
for i := 0 to IconHeader.idCount - 1 do
begin
FS.Seek(IconDirEntries[i].dwImageOffset, soFromBeginning);
FS.Read(BitmapInfoHeader, SizeOf(TBitmapInfoHeader));
BitmapInfoHeader.biHeight := BitmapInfoHeader.biHeight div 2;
BitmapInfo.bmiHeader := BitmapInfoHeader;
if (BitMapInfoHeader.biBitCount <= 8) then // !!!!!
begin
if IconDirEntries[i].bColorCount = 0 then
PalCount := 256
else
PalCount := IconDirEntries[i].bColorCount;
GetMem(IconPalette, SizeOf(TLogPalette)
+ SizeOf(TPaletteEntry) * PalCount);
IconPalette.palVersion := $300;
IconPalette.palNumEntries := PalCount;
FS.Read(IconPalette.palPalEntry, SizeOf(TPaletteEntry) * PalCount);
HIconPalette := CreatePalette(IconPalette^);
FreeMem(IconPalette);
end; // !!!!!
IconXorBitmaps[i] := TBitmap.Create;
IconXorBitmaps[i].Handle := CreateDIBSection(
CanvasHandle, BitmapInfo, DIB_RGB_COLORS, BitmapBits, 0, 0);
IconXorBitmaps[i].Canvas.Brush.Color := clRed;
IconXorBitmaps[i].Canvas.FillRect(Rect(0, 0, 32, 32));
BitBlt(CanvasHandle, 32, 32, 32, 32, IconXorBitmaps[i].Canvas.Handle,
0, 0, SrcCopy);
FS.Read(BitmapBits^, BitmapInfoHeader.biHeight *
(BytesPerScanline(BitmapInfoHeader.biWidth,
BitmapInfoHeader.biBitCount, 32)));
If (HIconPalette <> 0) and (BitMapInfoHeader.biBitCount <= 8) // !!!!!
then IconXorBitmaps[i].Palette := HIconPalette; // !!!!!
BitBlt(CanvasHandle, 0, 0, 32, 32, IconXorBitmaps[i].Canvas.Handle,
0, 0, SrcCopy);
IconAndBitmaps[i] := TBitmap.Create;
with BitmapInfoHeader do
begin
biSize := SizeOf(TBitmapInfoHeader);
biPlanes := 1;
biBitCount := 1;
biCompression := BI_RGB;
biSizeImage := 0;
biXPelsPerMeter := 0;
biYPelsPerMeter := 0;
biClrUsed := 0;
biClrImportant := 0;
end;
BitmapInfo.bmiHeader := BitmapInfoHeader;
IconAndBitmaps[i].PixelFormat := pf1bit;
IconAndBitmaps[i].Handle := CreateDIBSection(
CanvasHandle, BitmapInfo, DIB_RGB_COLORS, BitmapBits, 0, 0);
FS.Read(BitmapBits^, BitmapInfoHeader.biHeight *
(BytesPerScanline(BitmapInfoHeader.biWidth,
BitmapInfoHeader.biBitCount, 32)));
for k := 0 to 1 do
with ColorTable[k] do
begin
rgbBlue := k * 255;
rgbGreen := k * 255;
rgbRed := k * 255;
rgbReserved := 0;
end;
SetDIBColorTable(IconAndBitmaps[i].Canvas.Handle, 0, 2, ColorTable);
end;
finally
FS.Free;
end;
Loaded := True;
end;
...........
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Vovan#1 (2006-10-04 23:02) [9]
procedure TIconClass.Draw(x, y: Integer; Index: Integer;
DrawWhat: TDrawWhat; Bitmap: TBitmap);
var x0, y0: Integer;
TempColor: TColor;
RowD: pRGBTripleArray; // D = Destination
RowS: pRGBQuadArray; // S = Source
begin
if DrawWhat = dwXorMask then
begin
with IconXorBitmaps[Index] do
BitBlt(Bitmap.Canvas.Handle, x, y, Width, Height,
Canvas.Handle, 0, 0, SrcCopy);
Exit;
end;
if DrawWhat = dwAndMask then
begin
with IconAndBitmaps[Index] do
BitBlt(Bitmap.Canvas.Handle, x, y, Width, Height,
Canvas.Handle, 0, 0, SrcCopy);
Exit;
end;
if IconXorBitmaps[Index].PixelFormat <> pf32bit then
begin
with IconAndBitmaps[Index] do
BitBlt(Bitmap.Canvas.Handle, x, y, Width, Height,
Canvas.Handle, 0, 0, SrcPaint);
with IconXorBitmaps[Index] do
BitBlt(Bitmap.Canvas.Handle, x, y, Width, Height,
Canvas.Handle, 0, 0, SrcAnd);
end
else
begin
for y0 := y to y + IconXorBitmaps[Index].Height - 1 do
begin
RowD := Bitmap.Scanline[y0];
RowS := IconXorBitmaps[Index].Scanline[y0 - y];
for x0 := x to x + IconXorBitmaps[Index].Width - 1 do
begin
tempColor := BlendColors(TColor(RGB(RowD[x0].rgbtRed,
RowD[x0].rgbtGreen, RowD[x0].rgbtBlue)),
TColor(RGB(RowS[x0 - x].rgbRed, RowS[x0 - x].rgbGreen,
RowS[x0 - x].rgbBlue)), RowS[x0 - x].rgbReserved / 256);
with RowD[x0] do
begin
rgbtRed := GetRValue(tempColor);
rgbtGreen := GetGValue(tempColor);
rgbtBlue := GetBValue(tempColor);
end;
end;
end;
end;
end;
function BlendColors(const Color1, Color2: TColor; Amount: Extended): TColor;
var
R, R2, G, G2, B, B2: Integer;
win1, win2: Integer;
begin
win1 := ColorToRGB(Color1);
win2 := ColorToRGB(Color2);
R := GetRValue(win1); R2 := GetRValue(win2);
G := GetGValue(win1); G2 := GetGValue(win2);
B := GetBValue(win1); B2 := GetBValue(win2);
B2 := Round((1 - Amount) * B + Amount * B2);
G2 := Round((1 - Amount) * G + Amount * G2);
R2 := Round((1 - Amount) * R + Amount * R2);
if R2 < 0 then R2 := 0; if R2 > 255 then R2 := R;
if G2 < 0 then G2 := 0; if G2 > 255 then G2 := R;
if B2 < 0 then B2 := 0; if B2 > 255 then B2 := R;
Result := TColor(RGB(R2, G2, B2));
end;
end.
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Германн © (2006-10-05 00:46) [10]
> Icon (03.10.06 15:30) [4]
>
> Ясно. Спасибо всем. В общем я примерно так и думал. Халявы
> захотелось :)
>
Ну ты просто шаман! Стоило только захотеть и вон сколько всего сразу. И всё без пошлины! :-)
Страницы: 1 вся ветка
Форум: "Основная";
Текущий архив: 2006.11.19;
Скачать: [xml.tar.bz2];
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Время: 0.045 c