rainmeter-studio/Common/Gfx/TextFormatGDIP.cpp
2013-03-28 15:09:46 +02:00

144 lines
3.9 KiB
C++

/*
Copyright (C) 2013 Birunthan Mohanathas
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "TextFormatGDIP.h"
namespace Gfx {
TextFormatGDIP::TextFormatGDIP() :
m_Font(),
m_FontFamily()
{
}
TextFormatGDIP::~TextFormatGDIP()
{
Dispose();
}
void TextFormatGDIP::Dispose()
{
delete m_FontFamily;
m_FontFamily = nullptr;
delete m_Font;
m_Font = nullptr;
}
void TextFormatGDIP::SetProperties(const WCHAR* fontFamily, int size, bool bold, bool italic, Gdiplus::PrivateFontCollection* fontCollection)
{
Dispose();
m_FontFamily = new Gdiplus::FontFamily(fontFamily);
if (m_FontFamily->GetLastStatus() != Gdiplus::Ok)
{
delete m_FontFamily;
m_FontFamily = nullptr;
// Not found in system collection so try the private collection.
if (fontCollection)
{
m_FontFamily = new Gdiplus::FontFamily(fontFamily, fontCollection);
if (m_FontFamily->GetLastStatus() != Gdiplus::Ok)
{
delete m_FontFamily;
m_FontFamily = nullptr;
}
}
}
Gdiplus::FontStyle style = Gdiplus::FontStyleRegular;
if (bold && italic)
{
style = Gdiplus::FontStyleBoldItalic;
}
else if (bold)
{
style = Gdiplus::FontStyleBold;
}
else if (italic)
{
style = Gdiplus::FontStyleItalic;
}
if (size != 0)
{
// Adjust the font size with screen DPI.
HDC dc = GetDC(0);
const int dpi = GetDeviceCaps(dc, LOGPIXELSX);
ReleaseDC(0, dc);
const Gdiplus::REAL fontSize = (Gdiplus::REAL)size * (96.0f / dpi);
if (m_FontFamily)
{
m_Font = new Gdiplus::Font(m_FontFamily, fontSize, style);
if (m_Font->GetLastStatus() != Gdiplus::Ok)
{
delete m_Font;
m_Font = nullptr;
}
}
if (!m_Font)
{
// Use default font ("Arial" or GenericSansSerif).
m_Font = new Gdiplus::Font(L"Arial", fontSize, style);
if (m_Font->GetLastStatus() != Gdiplus::Ok)
{
delete m_Font;
m_Font = nullptr;
}
}
}
}
void TextFormatGDIP::SetTrimming(bool trim)
{
if (trim)
{
m_StringFormat.SetTrimming(Gdiplus::StringTrimmingEllipsisCharacter);
m_StringFormat.SetFormatFlags(0x0);
}
else
{
m_StringFormat.SetTrimming(Gdiplus::StringTrimmingNone);
m_StringFormat.SetFormatFlags(Gdiplus::StringFormatFlagsNoClip | Gdiplus::StringFormatFlagsNoWrap);
}
}
void TextFormatGDIP::SetHorizontalAlignment(HorizontalAlignment alignment)
{
static_assert(Gdiplus::StringAlignmentNear == (int)HorizontalAlignment::Left, "Enum mismatch");
static_assert(Gdiplus::StringAlignmentCenter == (int)HorizontalAlignment::Center, "Enum mismatch");
static_assert(Gdiplus::StringAlignmentFar == (int)HorizontalAlignment::Right, "Enum mismatch");
__super::SetHorizontalAlignment(alignment);
m_StringFormat.SetAlignment((Gdiplus::StringAlignment)alignment);
}
void TextFormatGDIP::SetVerticalAlignment(VerticalAlignment alignment)
{
static_assert(Gdiplus::StringAlignmentNear == (int)VerticalAlignment::Top, "Enum mismatch");
static_assert(Gdiplus::StringAlignmentCenter == (int)VerticalAlignment::Center, "Enum mismatch");
static_assert(Gdiplus::StringAlignmentFar == (int)VerticalAlignment::Bottom, "Enum mismatch");
__super::SetVerticalAlignment(alignment);
m_StringFormat.SetLineAlignment((Gdiplus::StringAlignment)alignment);
}
} // namespace Gfx