rainmeter-studio/Library/MeterImage.cpp
spx a0ae80cd04 Added image manipulation codes to Meter=BITMAP/BUTTON/HISTOGRAM and refactored them.
For BITMAP/BUTTON:
- Greyscale
- ImageTint
- ImageAlpha
- ColorMatrixN
- ImageFlip
Note: BITMAP and BUTTON are not able to support ImageRotate.

For HISTOGRAM:
- PrimaryGreyscale
- PrimaryImageTint
- PrimaryImageAlpha
- PrimaryColorMatrixN
- PrimaryImageFlip
- PrimaryImageRotate
- Secondary***
- Both***
2010-11-27 19:53:23 +00:00

274 lines
5.3 KiB
C++

/*
Copyright (C) 2002 Kimmo Pekkola
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "StdAfx.h"
#include "MeterImage.h"
#include "Measure.h"
#include "Error.h"
#include "Rainmeter.h"
extern CRainmeter* Rainmeter;
using namespace Gdiplus;
/*
** CMeterImage
**
** The constructor
**
*/
CMeterImage::CMeterImage(CMeterWindow* meterWindow) : CMeter(meterWindow)
{
m_NeedsReload = false;
m_WidthDefined = false;
m_HeightDefined = false;
m_PreserveAspectRatio = false;
}
/*
** ~CMeterImage
**
** The destructor
**
*/
CMeterImage::~CMeterImage()
{
}
/*
** Initialize
**
** Load the image and get the dimensions of the meter from it.
**
*/
void CMeterImage::Initialize()
{
CMeter::Initialize();
if (!m_DynamicVariables) LoadImage(true);
}
/*
** LoadImage
**
** Loads the image from disk
**
*/
void CMeterImage::LoadImage(bool bLoadAlways)
{
m_Image.LoadImage(m_ImageName, bLoadAlways);
if (m_Image.IsLoaded())
{
// Calculate size of the meter
Bitmap* bitmap = m_Image.GetImage();
int imageW = bitmap->GetWidth();
int imageH = bitmap->GetHeight();
if (m_WidthDefined)
{
if (!m_HeightDefined)
{
m_H = (imageW == 0) ? 0 : (int)(m_W * imageH / (double)imageW);
}
}
else
{
if (m_HeightDefined)
{
m_W = (imageH == 0) ? 0 : (int)(m_H * imageW / (double)imageH);
}
else
{
m_W = imageW;
m_H = imageH;
}
}
}
}
/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
void CMeterImage::ReadConfig(const WCHAR* section)
{
// Read common configs
CMeter::ReadConfig(section);
CConfigParser& parser = m_MeterWindow->GetParser();
m_Path = parser.ReadString(section, L"Path", L"");
if (!m_Path.empty())
{
WCHAR ch = m_Path[m_Path.length() - 1];
if (ch != L'\\' && ch != L'/')
{
m_Path += L"\\";
}
}
if (!m_Initialized || !m_Measure)
{
std::wstring oldImageName = m_ImageName;
m_ImageName = parser.ReadString(section, L"ImageName", L"");
if (!m_ImageName.empty())
{
m_ImageName.insert(0, m_Path);
m_ImageName = m_MeterWindow->MakePathAbsolute(m_ImageName);
}
if (m_DynamicVariables)
{
m_NeedsReload = (oldImageName != m_ImageName);
}
}
m_PreserveAspectRatio = 0!=parser.ReadInt(section, L"PreserveAspectRatio", 0);
if (-1 != (int)parser.ReadFormula(section, L"W", -1))
{
m_WidthDefined = true;
}
if (-1 != (int)parser.ReadFormula(section, L"H", -1))
{
m_HeightDefined = true;
}
// Read tinting configs
m_Image.ReadConfig(parser, section);
}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterImage::Update()
{
if (CMeter::Update())
{
if (m_Measure) //read from the measure
{
std::wstring val = m_Measure->GetStringValue(false, 1, 0, false);
if (!val.empty())
{
val.insert(0, m_Path);
val = m_MeterWindow->MakePathAbsolute(val);
if (val != m_ImageName)
{
m_ImageName = val;
LoadImage(true);
}
else
{
LoadImage(false);
}
}
else if (m_Image.IsLoaded())
{
m_Image.DisposeImage();
}
return true;
}
else if (m_DynamicVariables) //read from the skin
{
LoadImage(m_NeedsReload);
return true;
}
}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterImage::Draw(Graphics& graphics)
{
if(!CMeter::Draw(graphics)) return false;
if (m_Image.IsLoaded())
{
// Copy the image over the doublebuffer
Bitmap* drawBitmap = m_Image.GetImage();
int x = GetX();
int y = GetY();
int imageW = drawBitmap->GetWidth();
int imageH = drawBitmap->GetHeight();
int drawW, drawH;
if (m_PreserveAspectRatio)
{
if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;
REAL imageRatio = imageW / (REAL)imageH;
REAL meterRatio = m_W / (REAL)m_H;
if (imageRatio >= meterRatio)
{
drawW = m_W;
drawH = m_W * imageH / imageW;
}
else
{
drawW = m_H * imageW / imageH;
drawH = m_H;
}
// Centering
x += (m_W - drawW) / 2;
y += (m_H - drawH) / 2;
}
else
{
drawW = m_W;
drawH = m_H;
}
Rect r(x, y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, imageW, imageH, UnitPixel);
}
return true;
}
/*
** BindMeasure
**
** Overridden method. The Image meters need not to be bound on anything
**
*/
void CMeterImage::BindMeasure(const std::list<CMeasure*>& measures)
{
// It's ok not to bind image meter to anything
if (!m_MeasureName.empty())
{
CMeter::BindMeasure(measures);
}
}