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Added "ImageAlpha" option to the IMAGE meter.

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Changed the interpolation mode in AntiAlias=1 to Default from Bicubic. There is a possibility that this change will be changed again in the future.
This commit is contained in:
spx
2010-02-20 00:39:08 +00:00
parent 0bcd8c30fc
commit 16b1918af3
3 changed files with 32 additions and 3 deletions
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3
Library/Meter.cpp
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@@ -419,7 +419,8 @@ bool CMeter::Draw(Graphics& graphics)
if (m_AntiAlias) if (m_AntiAlias)
{ {
graphics.SetInterpolationMode(InterpolationModeBicubic); //graphics.SetInterpolationMode(InterpolationModeBicubic); // Bicubic is not suitable for shrinking an image.
graphics.SetInterpolationMode(InterpolationModeDefault);
graphics.SetSmoothingMode(SmoothingModeHighQuality); graphics.SetSmoothingMode(SmoothingModeHighQuality);
graphics.SetPixelOffsetMode(PixelOffsetModeHighQuality); graphics.SetPixelOffsetMode(PixelOffsetModeHighQuality);
} }

31
Library/MeterImage.cpp
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@@ -39,6 +39,7 @@ CMeterImage::CMeterImage(CMeterWindow* meterWindow) : CMeter(meterWindow)
m_WidthDefined = false; m_WidthDefined = false;
m_HeightDefined = false; m_HeightDefined = false;
m_PreserveAspectRatio = false; m_PreserveAspectRatio = false;
m_ImageAlpha = 255;
m_hBuffer = NULL; m_hBuffer = NULL;
m_Modified.dwHighDateTime = 0; m_Modified.dwHighDateTime = 0;
m_Modified.dwLowDateTime = 0; m_Modified.dwLowDateTime = 0;
@@ -205,7 +206,7 @@ void CMeterImage::ReadConfig(const WCHAR* section)
} }
} }
if (!m_Measure) if (!m_Initialized || !m_Measure)
{ {
std::wstring oldImageName = m_ImageName; std::wstring oldImageName = m_ImageName;
@@ -220,6 +221,10 @@ void CMeterImage::ReadConfig(const WCHAR* section)
m_PreserveAspectRatio = 0!=parser.ReadInt(section, L"PreserveAspectRatio", 0); m_PreserveAspectRatio = 0!=parser.ReadInt(section, L"PreserveAspectRatio", 0);
m_ImageAlpha = parser.ReadInt(section, L"ImageAlpha", 255);
m_ImageAlpha = min(255, m_ImageAlpha);
m_ImageAlpha = max(0, m_ImageAlpha);
if (-1 != (int)parser.ReadFormula(section, L"W", -1)) if (-1 != (int)parser.ReadFormula(section, L"W", -1))
{ {
m_WidthDefined = true; m_WidthDefined = true;
@@ -316,7 +321,29 @@ bool CMeterImage::Draw(Graphics& graphics)
} }
Rect r(x, y, drawW, drawH); Rect r(x, y, drawW, drawH);
graphics.DrawImage(m_Bitmap, r, 0, 0, imageW, imageH, UnitPixel);
if (m_ImageAlpha == 255)
{
graphics.DrawImage(m_Bitmap, r, 0, 0, imageW, imageH, UnitPixel);
}
else if (m_ImageAlpha > 0)
{
REAL alp = m_ImageAlpha / 255.0f;
// Initialize the color matrix
ColorMatrix colorMatrix = { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, alp, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f, 1.0f };
// Create an ImageAttributes object and set its color matrix
ImageAttributes imageAtt;
imageAtt.SetColorMatrix(&colorMatrix, ColorMatrixFlagsDefault, ColorAdjustTypeBitmap);
// Draw the semi-transparent bitmap image
graphics.DrawImage(m_Bitmap, r, 0, 0, imageW, imageH, UnitPixel, &imageAtt);
}
} }
return true; return true;

1
Library/MeterImage.h
View File

@@ -49,6 +49,7 @@ private:
bool m_WidthDefined; bool m_WidthDefined;
bool m_HeightDefined; bool m_HeightDefined;
bool m_PreserveAspectRatio; // If true, aspect ratio of the image is preserved when the image is scaled bool m_PreserveAspectRatio; // If true, aspect ratio of the image is preserved when the image is scaled
int m_ImageAlpha; // Transparency value 0 - 255
HGLOBAL m_hBuffer; HGLOBAL m_hBuffer;
FILETIME m_Modified; FILETIME m_Modified;
}; };