rainmeter-studio/Library/MeterString.cpp

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/*
Copyright (C) 2001 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 "MeterString.h"
#include "Rainmeter.h"
#include "Measure.h"
#include "Error.h"
using namespace Gdiplus;
std::unordered_map<std::wstring, Gdiplus::FontFamily*> CMeterString::c_FontFamilies;
std::unordered_map<std::wstring, Gdiplus::Font*> CMeterString::c_Fonts;
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void StringToUpper(std::wstring& str)
{
//change each element of the string to upper case
std::transform(str.begin(), str.end(), str.begin(), ::towupper);
}
void StringToLower(std::wstring& str)
{
//change each element of the string to lower case
std::transform(str.begin(), str.end(), str.begin(), ::towlower);
}
void StringToProper(std::wstring& str)
{
//change each element of the string to lower case
if (!str.empty())
{
str[0] = towupper(str[0]);
for (size_t i = 1; i < str.length(); ++i)
{
if (str[i-1] == L' ')
{
str[i] = towupper(str[i]);
}
else
{
str[i] = towlower(str[i]);
}
}
}
}
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/*
** CMeterString
**
** The constructor
**
*/
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CMeterString::CMeterString(CMeterWindow* meterWindow, const WCHAR* name) : CMeter(meterWindow, name),
m_Color(Color::White),
m_EffectColor(Color::Black),
m_AutoScale(AUTOSCALE_OFF),
m_Align(ALIGN_LEFT),
m_Style(NORMAL),
m_Effect(EFFECT_NONE),
m_textCase(TEXTCASE_NONE),
m_FontSize(10),
m_Scale(1.0),
m_NoDecimals(true),
m_Percentual(true),
m_ClipString(false),
m_Font(),
m_FontFamily(),
m_NumOfDecimals(-1),
m_DimensionsDefined(false),
m_Angle()
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{
}
/*
** ~CMeterString
**
** The destructor
**
*/
CMeterString::~CMeterString()
{
}
/*
** GetX
**
** Returns the X-coordinate of the meter
**
*/
int CMeterString::GetX(bool abs)
{
int x = CMeter::GetX();
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if (!abs)
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{
switch(m_Align)
{
case ALIGN_CENTER:
x = x - (m_W / 2);
break;
case ALIGN_RIGHT:
x -= m_W;
break;
case ALIGN_LEFT:
// This is already correct
break;
}
}
return x;
}
/*
** Initialize
**
** Create the font that is used to draw the text.
**
*/
void CMeterString::Initialize()
{
CMeter::Initialize();
// Check if the font family is in the cache and use it
std::wstring cacheKey;
std::wstring systemFontFaceKey = FontFaceToString(m_FontFace, NULL);
std::unordered_map<std::wstring, Gdiplus::FontFamily*>::const_iterator iter = c_FontFamilies.find(systemFontFaceKey);
if (iter != c_FontFamilies.end())
{
m_FontFamily = (*iter).second;
cacheKey = systemFontFaceKey;
}
else
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{
m_FontFamily = NULL;
PrivateFontCollection* collection = m_MeterWindow->GetPrivateFontCollection();
std::wstring privateFontFaceKey;
if (collection)
{
// Check if the private font family is in the cache and use it
privateFontFaceKey = FontFaceToString(m_FontFace, collection);
iter = c_FontFamilies.find(privateFontFaceKey);
if (iter != c_FontFamilies.end())
{
m_FontFamily = (*iter).second;
cacheKey = privateFontFaceKey;
}
}
if (m_FontFamily == NULL) // Not found in the cache
{
m_FontFamily = new FontFamily(m_FontFace.c_str());
Status status = m_FontFamily->GetLastStatus();
if (Ok == status)
{
cacheKey = systemFontFaceKey;
}
else
{
delete m_FontFamily;
// It couldn't find the font family
// Therefore we look in the privatefontcollection of this meters MeterWindow
if (collection)
{
m_FontFamily = new FontFamily(m_FontFace.c_str(), collection);
status = m_FontFamily->GetLastStatus();
if (Ok == status)
{
cacheKey = privateFontFaceKey;
}
}
else
{
m_FontFamily = NULL;
}
// It couldn't find the font family: Log it.
if (Ok != status)
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{
std::wstring error = L"Unable to load font family: " + m_FontFace;
Log(LOG_ERROR, error.c_str());
delete m_FontFamily;
m_FontFamily = NULL;
cacheKey = L"<>"; // set dummy key
}
}
if (m_FontFamily)
{
// Cache
//LogWithArgs(LOG_DEBUG, L"FontFamilyCache-Add: %s", cacheKey.c_str());
c_FontFamilies[cacheKey] = m_FontFamily;
}
}
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}
FontStyle style = FontStyleRegular;
switch(m_Style)
{
case ITALIC:
style = FontStyleItalic;
break;
case BOLD:
style = FontStyleBold;
break;
case BOLDITALIC:
style = FontStyleBoldItalic;
break;
}
// Adjust the font size with screen DPI
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HDC dc = GetDC(0);
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int dpi = GetDeviceCaps(dc, LOGPIXELSX);
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ReleaseDC(0, dc);
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REAL size = (REAL)m_FontSize * (96.0f / (REAL)dpi);
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// Check if the font is in the cache and use it
cacheKey += L"-";
cacheKey += FontPropertiesToString(size, style);
std::unordered_map<std::wstring, Gdiplus::Font*>::const_iterator iter2 = c_Fonts.find(cacheKey);
if (iter2 != c_Fonts.end())
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{
m_Font = (*iter2).second;
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}
else
{
if (m_FontFamily)
{
m_Font = new Gdiplus::Font(m_FontFamily, size, style);
}
else
{
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m_Font = new Gdiplus::Font(FontFamily::GenericSansSerif (), size, style);
}
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Status status = m_Font->GetLastStatus();
if (Ok == status)
{
// Cache
//LogWithArgs(LOG_DEBUG, L"FontCache-Add: %s", cacheKey.c_str());
c_Fonts[cacheKey] = m_Font;
}
else
{
delete m_Font;
m_Font = NULL;
if (m_FontSize != 0)
{
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std::wstring error = L"Unable to create font: " + m_FontFace;
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throw CError(error, __LINE__, __FILE__);
}
}
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}
}
/*
** ReadConfig
**
** Read the meter-specific configs from the ini-file.
**
*/
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void CMeterString::ReadConfig(CConfigParser& parser, const WCHAR* section)
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{
// Store the current font values so we know if the font needs to be updated
std::wstring oldFontFace = m_FontFace;
int oldFontSize = m_FontSize;
TEXTSTYLE oldStyle = m_Style;
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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())
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{
ReadMeasureNames(parser, section, m_MeasureNames);
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}
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m_Color = parser.ReadColor(section, L"FontColor", Color::Black);
m_EffectColor = parser.ReadColor(section, L"FontEffectColor", Color::Black);
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m_Prefix = parser.ReadString(section, L"Prefix", L"");
m_Postfix = parser.ReadString(section, L"Postfix", L"");
m_Text = parser.ReadString(section, L"Text", L"");
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m_Percentual = 0!=parser.ReadInt(section, L"Percentual", 0);
m_ClipString = 0!=parser.ReadInt(section, L"ClipString", 0);
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m_FontFace = parser.ReadString(section, L"FontFace", L"Arial");
if (m_FontFace.empty())
{
m_FontFace = L"Arial";
}
m_FontSize = (int)parser.ReadFormula(section, L"FontSize", 10);
if (m_FontSize < 0)
{
m_FontSize = 10;
}
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m_NumOfDecimals = parser.ReadInt(section, L"NumOfDecimals", -1);
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m_Angle = (Gdiplus::REAL)parser.ReadFloat(section, L"Angle", 0.0);
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const std::wstring& autoscale = parser.ReadString(section, L"AutoScale", L"0");
int autoscaleValue = _wtoi(autoscale.c_str());
if (autoscaleValue == 0)
{
m_AutoScale = AUTOSCALE_OFF;
}
else
{
if (autoscale.find_last_of(L"kK") == std::wstring::npos)
{
m_AutoScale = (autoscaleValue == 2) ? AUTOSCALE_1000 : AUTOSCALE_1024;
}
else
{
m_AutoScale = (autoscaleValue == 2) ? AUTOSCALE_1000K : AUTOSCALE_1024K;
}
}
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const std::wstring& scale = parser.ReadString(section, L"Scale", L"1");
if (scale.find(L'.') == std::wstring::npos)
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{
m_NoDecimals = true;
}
else
{
m_NoDecimals = false;
}
m_Scale = wcstod(scale.c_str(), NULL);
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const std::wstring& align = parser.ReadString(section, L"StringAlign", L"LEFT");
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if (_wcsicmp(align.c_str(), L"LEFT") == 0)
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{
m_Align = ALIGN_LEFT;
}
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else if (_wcsicmp(align.c_str(), L"RIGHT") == 0)
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{
m_Align = ALIGN_RIGHT;
}
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else if (_wcsicmp(align.c_str(), L"CENTER") == 0)
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{
m_Align = ALIGN_CENTER;
}
else
{
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std::wstring error = L"StringAlign=" + align;
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error += L" is not valid in meter [";
error += m_Name;
error += L"].";
throw CError(error, __LINE__, __FILE__);
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}
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const std::wstring& stringCase = parser.ReadString(section, L"StringCase", L"NONE");
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if (_wcsicmp(stringCase.c_str(), L"NONE") == 0)
{
m_textCase = TEXTCASE_NONE;
}
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else if (_wcsicmp(stringCase.c_str(), L"UPPER") == 0)
{
m_textCase = TEXTCASE_UPPER;
}
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else if (_wcsicmp(stringCase.c_str(), L"LOWER") == 0)
{
m_textCase = TEXTCASE_LOWER;
}
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else if (_wcsicmp(stringCase.c_str(), L"PROPER") == 0)
{
m_textCase = TEXTCASE_PROPER;
}
else
{
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std::wstring error = L"StringCase=" + stringCase;
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error += L" is not valid in meter [";
error += m_Name;
error += L"].";
throw CError(error, __LINE__, __FILE__);
}
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const std::wstring& style = parser.ReadString(section, L"StringStyle", L"NORMAL");
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if (_wcsicmp(style.c_str(), L"NORMAL") == 0)
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{
m_Style = NORMAL;
}
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else if (_wcsicmp(style.c_str(), L"BOLD") == 0)
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{
m_Style = BOLD;
}
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else if (_wcsicmp(style.c_str(), L"ITALIC") == 0)
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{
m_Style = ITALIC;
}
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else if (_wcsicmp(style.c_str(), L"BOLDITALIC") == 0)
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{
m_Style = BOLDITALIC;
}
else
{
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std::wstring error = L"StringStyle=" + style;
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error += L" is not valid in meter [";
error += m_Name;
error += L"].";
throw CError(error, __LINE__, __FILE__);
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}
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const std::wstring& effect = parser.ReadString(section, L"StringEffect", L"NONE");
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if (_wcsicmp(effect.c_str(), L"NONE") == 0)
{
m_Effect = EFFECT_NONE;
}
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else if (_wcsicmp(effect.c_str(), L"SHADOW") == 0)
{
m_Effect = EFFECT_SHADOW;
}
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else if (_wcsicmp(effect.c_str(), L"BORDER") == 0)
{
m_Effect = EFFECT_BORDER;
}
else
{
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std::wstring error = L"StringEffect=" + effect;
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error += L" is not valid in meter [";
error += m_Name;
error += L"].";
throw CError(error, __LINE__, __FILE__);
}
if (parser.IsValueDefined(section, L"W") && parser.IsValueDefined(section, L"H"))
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{
m_DimensionsDefined = true;
}
if (m_Initialized &&
(oldFontFace != m_FontFace ||
oldFontSize != m_FontSize ||
oldStyle != m_Style))
{
Initialize(); // Recreate the font
}
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}
/*
** Update
**
** Updates the value(s) from the measures.
**
*/
bool CMeterString::Update()
{
if (CMeter::Update())
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{
std::vector<std::wstring> stringValues;
int decimals = (m_NumOfDecimals != -1) ? m_NumOfDecimals : (m_NoDecimals && (m_Percentual || m_AutoScale == AUTOSCALE_OFF)) ? 0 : 1;
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if (m_Measure) stringValues.push_back(m_Measure->GetStringValue(m_AutoScale, m_Scale, decimals, m_Percentual));
// Get the values for the other measures
for (size_t i = 0, isize = m_Measures.size(); i < isize; ++i)
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{
stringValues.push_back(m_Measures[i]->GetStringValue(m_AutoScale, m_Scale, decimals, m_Percentual));
}
// Create the text
m_String = m_Prefix;
if (m_Text.empty())
{
if (!stringValues.empty())
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{
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m_String += stringValues[0];
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}
}
else if (!stringValues.empty())
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{
std::wstring tmpText = m_Text;
ReplaceMeasures(stringValues, tmpText);
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m_String += tmpText;
}
else
{
m_String += m_Text;
}
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if (!m_Postfix.empty()) m_String += m_Postfix;
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switch(m_textCase)
{
case TEXTCASE_UPPER:
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StringToUpper(m_String);
break;
case TEXTCASE_LOWER:
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StringToLower(m_String);
break;
case TEXTCASE_PROPER:
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StringToProper(m_String);
break;
}
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if (!m_DimensionsDefined)
{
// Calculate the text size
RectF rect;
Graphics graphics(m_MeterWindow->GetDoubleBuffer());
if (DrawString(graphics, &rect))
{
m_W = (int)rect.Width;
m_H = (int)rect.Height;
}
else
{
m_W = 1;
m_H = 1;
}
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}
return true;
}
return false;
}
/*
** Draw
**
** Draws the meter on the double buffer
**
*/
bool CMeterString::Draw(Graphics& graphics)
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{
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if (!CMeter::Draw(graphics)) return false;
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return DrawString(graphics, NULL);
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}
/*
** DrawString
**
** Draws the string or calculates it's size
**
*/
bool CMeterString::DrawString(Graphics& graphics, RectF* rect)
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{
if (m_Font == NULL) return false;
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StringFormat stringFormat;
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if (m_AntiAlias)
{
graphics.SetTextRenderingHint(TextRenderingHintAntiAlias);
}
else
{
graphics.SetTextRenderingHint(TextRenderingHintSingleBitPerPixelGridFit);
}
switch(m_Align)
{
case ALIGN_CENTER:
stringFormat.SetAlignment(StringAlignmentCenter);
break;
case ALIGN_RIGHT:
stringFormat.SetAlignment(StringAlignmentFar);
break;
case ALIGN_LEFT:
stringFormat.SetAlignment(StringAlignmentNear);
break;
}
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if (m_ClipString)
{
stringFormat.SetTrimming(StringTrimmingEllipsisCharacter);
}
else
{
stringFormat.SetTrimming(StringTrimmingNone);
stringFormat.SetFormatFlags(StringFormatFlagsNoClip | StringFormatFlagsNoWrap);
}
CharacterRange range(0, (int)m_String.length());
stringFormat.SetMeasurableCharacterRanges(1, &range);
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REAL x = (REAL)GetX();
REAL y = (REAL)GetY();
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if (rect)
{
PointF pos(x, y);
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graphics.MeasureString(m_String.c_str(), (int)m_String.length(), m_Font, pos, &stringFormat, rect);
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}
else
{
m_Rect = RectF((REAL)x, (REAL)y, (REAL)m_W, (REAL)m_H);
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if (m_Angle != 0.0f)
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{
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REAL angle = m_Angle * 180.0f / 3.14159265f; // Convert to degrees
graphics.TranslateTransform((Gdiplus::REAL)CMeter::GetX(), y);
graphics.RotateTransform(angle);
graphics.TranslateTransform(-(Gdiplus::REAL)CMeter::GetX(), -y);
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}
if (m_Effect == EFFECT_SHADOW)
{
SolidBrush solidBrush(m_EffectColor);
RectF rcEffect(m_Rect);
rcEffect.Offset(1, 1);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, rcEffect, &stringFormat, &solidBrush);
}
else if (m_Effect == EFFECT_BORDER)
{
SolidBrush solidBrush(m_EffectColor);
RectF rcEffect(m_Rect);
rcEffect.Offset(0, 1);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, rcEffect, &stringFormat, &solidBrush);
rcEffect.Offset(1, -1);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, rcEffect, &stringFormat, &solidBrush);
rcEffect.Offset(-1, -1);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, rcEffect, &stringFormat, &solidBrush);
rcEffect.Offset(-1, 1);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, rcEffect, &stringFormat, &solidBrush);
}
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SolidBrush solidBrush(m_Color);
graphics.DrawString(m_String.c_str(), (int)m_String.length(), m_Font, m_Rect, &stringFormat, &solidBrush);
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if (m_Angle != 0.0f)
{
graphics.ResetTransform();
}
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}
return true;
}
/*
** BindMeasure
**
** Overridden method. The string meters need not to be bound on anything
**
*/
void CMeterString::BindMeasure(const std::list<CMeasure*>& measures)
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{
if (m_MeasureName.empty()) return; // Allow NULL measure binding
CMeter::BindMeasure(measures);
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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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std::list<CMeasure*>::const_iterator i = measures.begin();
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for ( ; i != measures.end(); ++i)
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{
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if (_wcsicmp((*i)->GetName(), (*j).c_str()) == 0)
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{
m_Measures.push_back(*i);
break;
}
}
if (i == measures.end())
{
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std::wstring error = L"The meter [" + m_Name;
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error += L"] cannot be bound with [";
error += (*j);
error += L"]!";
throw CError(error, __LINE__, __FILE__);
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}
}
CMeter::SetAllMeasures(m_Measures);
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}
/*
** FreeFontCache
**
** Static function which frees the font cache.
** If collection is not NULL, frees the private font cache.
**
*/
void CMeterString::FreeFontCache(PrivateFontCollection* collection)
{
std::wstring prefix;
if (collection)
{
WCHAR buffer[32];
_snwprintf_s(buffer, _TRUNCATE, L"<%p>", collection);
prefix = buffer;
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StringToLower(prefix);
}
std::unordered_map<std::wstring, Gdiplus::Font*>::iterator iter2 = c_Fonts.begin();
while (iter2 != c_Fonts.end())
{
if (collection == NULL || wcsncmp((*iter2).first.c_str(), prefix.c_str(), prefix.length()) == 0)
{
//LogWithArgs(LOG_DEBUG, L"FontCache-Remove: %s", (*iter2).first.c_str());
delete (*iter2).second;
if (collection)
{
c_Fonts.erase(iter2++);
continue;
}
}
++iter2;
}
if (collection == NULL) c_Fonts.clear();
std::unordered_map<std::wstring, Gdiplus::FontFamily*>::iterator iter = c_FontFamilies.begin();
while (iter != c_FontFamilies.end())
{
if (collection == NULL || wcsncmp((*iter).first.c_str(), prefix.c_str(), prefix.length()) == 0)
{
//LogWithArgs(LOG_DEBUG, L"FontFamilyCache-Remove: %s", (*iter).first.c_str());
delete (*iter).second;
if (collection)
{
c_FontFamilies.erase(iter++);
continue;
}
}
++iter;
}
if (collection == NULL) c_FontFamilies.clear();
}
/*
** FontFaceToString
**
** Static helper to convert font name to a string so it can be used as a key for the cache map.
**
*/
std::wstring CMeterString::FontFaceToString(const std::wstring& fontFace, PrivateFontCollection* collection)
{
WCHAR buffer[32];
_snwprintf_s(buffer, _TRUNCATE, L"<%p>", collection);
std::wstring strTmp = buffer + fontFace;
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StringToLower(strTmp);
return strTmp;
}
/*
** FontPropertiesToString
**
** Static helper to convert font properties to a string so it can be used as a key for the cache map.
**
*/
std::wstring CMeterString::FontPropertiesToString(REAL size, FontStyle style)
{
WCHAR buffer[64];
_snwprintf_s(buffer, _TRUNCATE, L"%.1f-%i", size, (int)style);
return buffer;
}
/*
** EnumerateInstalledFontFamilies
**
** Static helper to log all installed font families.
**
*/
void CMeterString::EnumerateInstalledFontFamilies()
{
INT fontCount;
InstalledFontCollection fontCollection;
if (Ok == fontCollection.GetLastStatus())
{
fontCount = fontCollection.GetFamilyCount();
if (fontCount > 0)
{
INT fontFound;
FontFamily* fontFamilies = new FontFamily[fontCount];
if (Ok == fontCollection.GetFamilies(fontCount, fontFamilies, &fontFound))
{
std::wstring fonts;
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for (INT i = 0; i < fontCount; ++i)
{
WCHAR familyName[LF_FACESIZE];
if (Ok == fontFamilies[i].GetFamilyName(familyName))
{
fonts += familyName;
}
else
{
fonts += L"***";
}
fonts += L", ";
}
Log(LOG_NOTICE, fonts.c_str());
}
else
{
Log(LOG_ERROR, L"Failed to enumerate installed font families: GetFamilies() failed.");
}
delete [] fontFamilies;
}
else
{
Log(LOG_WARNING, L"There are no installed font families!");
}
}
else
{
Log(LOG_ERROR, L"Failed to enumerate installed font families: InstalledFontCollection() failed.");
}
}