rainmeter-studio/Library/MeterImage.cpp

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/*
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"
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#include "MeterImage.h"
#include "Measure.h"
#include "Error.h"
#include "Rainmeter.h"
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#include "System.h"
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extern CRainmeter* Rainmeter;
using namespace Gdiplus;
/*
** CMeterImage
**
** The constructor
**
*/
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CMeterImage::CMeterImage(CMeterWindow* meterWindow, const WCHAR* name) : CMeter(meterWindow, name),
m_NeedsRedraw(false),
m_PreserveAspectRatio(false),
m_Tile(false),
m_ScaleMargins()
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{
}
/*
** ~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_Measure && !m_DynamicVariables && !m_ImageName.empty())
{
m_ImageNameResult = m_Path;
m_ImageNameResult += m_ImageName;
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m_MeterWindow->MakePathAbsolute(m_ImageNameResult);
LoadImage(m_ImageNameResult, true);
}
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}
/*
** LoadImage
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**
** Loads the image from disk
**
*/
void CMeterImage::LoadImage(const std::wstring& imageName, bool bLoadAlways)
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{
m_Image.LoadImage(imageName, bLoadAlways);
if (m_Image.IsLoaded())
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{
// Calculate size of the meter
Bitmap* bitmap = m_Image.GetImage();
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int imageW = bitmap->GetWidth();
int imageH = bitmap->GetHeight();
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if (m_WDefined)
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{
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if (!m_HDefined)
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{
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m_H = (imageW == 0) ? 0 : (m_Tile) ? imageH : m_W * imageH / imageW;
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}
}
else
{
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if (m_HDefined)
{
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m_W = (imageH == 0) ? 0 : (m_Tile) ? imageW : m_H * imageW / imageH;
}
else
{
m_W = imageW;
m_H = imageH;
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}
}
}
}
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/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
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void CMeterImage::ReadConfig(CConfigParser& parser, const WCHAR* section)
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{
// Read common configs
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CMeter::ReadConfig(parser, section);
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// Check for extra measures
if (!m_Initialized && !m_MeasureName.empty())
{
ReadMeasureNames(parser, section, m_MeasureNames);
}
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m_Path = parser.ReadString(section, L"Path", L"");
if (!m_Path.empty())
{
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if (!CSystem::IsPathSeparator(m_Path[m_Path.length() - 1]))
{
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m_Path += L'\\';
}
}
m_ImageName = parser.ReadString(section, L"ImageName", L"");
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m_PreserveAspectRatio = 0!=parser.ReadInt(section, L"PreserveAspectRatio", 0);
m_Tile = 0!=parser.ReadInt(section, L"Tile", 0);
static const RECT defMargins = {0};
m_ScaleMargins = parser.ReadRECT(section, L"ScaleMargins", defMargins);
// Read tinting configs
m_Image.ReadConfig(parser, section);
if (m_Initialized &&
!m_Measure && !m_DynamicVariables)
{
Initialize();
m_NeedsRedraw = true;
}
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}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterImage::Update()
{
if (CMeter::Update())
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{
if (m_Measure || m_DynamicVariables)
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{
// Store the current values so we know if the image needs to be updated
std::wstring oldResult = m_ImageNameResult;
if (m_Measure) // read from the measures
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{
std::wstring val = m_Measure->GetStringValue(AUTOSCALE_OFF, 1, 0, false);
if (m_ImageName.empty())
{
m_ImageNameResult = val;
}
else
{
std::vector<std::wstring> stringValues;
stringValues.push_back(val);
// Get the values for the other measures
std::vector<CMeasure*>::const_iterator iter = m_Measures.begin();
for ( ; iter != m_Measures.end(); ++iter)
{
stringValues.push_back((*iter)->GetStringValue(AUTOSCALE_OFF, 1, 0, false));
}
m_ImageNameResult = m_ImageName;
if (!ReplaceMeasures(stringValues, m_ImageNameResult))
{
// ImageName doesn't contain any measures, so use the result of MeasureName.
m_ImageNameResult = val;
}
}
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}
else // read from the skin
{
m_ImageNameResult = m_ImageName;
}
if (!m_ImageNameResult.empty())
{
m_ImageNameResult.insert(0, m_Path);
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m_MeterWindow->MakePathAbsolute(m_ImageNameResult);
}
LoadImage(m_ImageNameResult, (wcscmp(oldResult.c_str(), m_ImageNameResult.c_str()) != 0));
return true;
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}
else if (m_NeedsRedraw)
{
m_NeedsRedraw = false;
return true;
}
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}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterImage::Draw(Graphics& graphics)
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{
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if (!CMeter::Draw(graphics)) return false;
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if (m_Image.IsLoaded())
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{
// Copy the image over the doublebuffer
Bitmap* drawBitmap = m_Image.GetImage();
int imageW = drawBitmap->GetWidth();
int imageH = drawBitmap->GetHeight();
if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;
int x = GetX();
int y = GetY();
int drawW = m_W;
int drawH = m_H;
if (drawW == imageW && drawH == imageH &&
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m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
{
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Rect r(x, y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, imageW, imageH, UnitPixel);
}
else if (m_Tile)
{
ImageAttributes imgAttr;
imgAttr.SetWrapMode(WrapModeTile);
Rect r(x, y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);
}
else if (m_PreserveAspectRatio)
{
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if (m_WDefined && m_HDefined)
{
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;
}
Rect r(x, y, drawW, drawH);
graphics.DrawImage(drawBitmap, r, 0, 0, imageW, imageH, UnitPixel);
}
else
{
const RECT m = m_ScaleMargins;
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if (m.top > 0)
{
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if (m.left > 0)
{
// Top-Left
Rect r(x, y, m.left, m.top);
graphics.DrawImage(drawBitmap, r, 0, 0, m.left, m.top, UnitPixel);
}
// Top
Rect r(x + m.left, y, drawW - m.left - m.right, m.top);
graphics.DrawImage(drawBitmap, r, m.left, 0, imageW - m.left - m.right, m.top, UnitPixel);
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if (m.right > 0)
{
// Top-Right
Rect r(x + drawW - m.right, y, m.right, m.top);
graphics.DrawImage(drawBitmap, r, imageW - m.right, 0, m.right, m.top, UnitPixel);
}
}
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if (m.left > 0)
{
// Left
Rect r(x, y + m.top, m.left, drawH - m.top - m.bottom);
graphics.DrawImage(drawBitmap, r, 0, m.top, m.left, imageH - m.top - m.bottom, UnitPixel);
}
// Center
Rect r(x + m.left, y + m.top, drawW - m.left - m.right, drawH - m.top - m.bottom);
graphics.DrawImage(drawBitmap, r, m.left, m.top, imageW - m.left - m.right, imageH - m.top - m.bottom, UnitPixel);
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if (m.right > 0)
{
// Right
Rect r(x + drawW - m.right, y + m.top, m.right, drawH - m.top - m.bottom);
graphics.DrawImage(drawBitmap, r, imageW - m.right, m.top, m.right, imageH - m.top - m.bottom, UnitPixel);
}
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if (m.bottom > 0)
{
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if (m.left > 0)
{
// Bottom-Left
Rect r(x, y + drawH - m.bottom, m.left, m.bottom);
graphics.DrawImage(drawBitmap, r, 0, imageH - m.bottom, m.left, m.bottom, UnitPixel);
}
// Bottom
Rect r(x + m.left, y + drawH - m.bottom, drawW - m.left - m.right, m.bottom);
graphics.DrawImage(drawBitmap, r, m.left, imageH - m.bottom, imageW - m.left - m.right, m.bottom, UnitPixel);
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if (m.right > 0)
{
// Bottom-Right
Rect r(x + drawW - m.right, y + drawH - m.bottom, m.right, m.bottom);
graphics.DrawImage(drawBitmap, r, imageW - m.right, imageH - m.bottom, m.right, m.bottom, UnitPixel);
}
}
}
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}
return true;
}
/*
** BindMeasure
**
** Overridden method. The Image meters need not to be bound on anything
**
*/
void CMeterImage::BindMeasure(const std::list<CMeasure*>& measures)
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{
if (m_MeasureName.empty()) return; // Allow NULL measure binding
CMeter::BindMeasure(measures);
std::vector<std::wstring>::const_iterator j = m_MeasureNames.begin();
for (; j != m_MeasureNames.end(); ++j)
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{
// Go through the list and check it there is a secondary measures for us
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const WCHAR* name = (*j).c_str();
std::list<CMeasure*>::const_iterator i = measures.begin();
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for ( ; i != measures.end(); ++i)
{
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if (_wcsicmp((*i)->GetName(), name) == 0)
{
m_Measures.push_back(*i);
break;
}
}
if (i == measures.end())
{
std::wstring error = L"The meter [" + m_Name;
error += L"] cannot be bound with [";
error += (*j);
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error += L']';
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throw CError(error);
}
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}
CMeter::SetAllMeasures(m_Measures);
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}