1 files changed, 136 insertions, 0 deletions
diff --git a/src/graphics/Display.cpp b/src/graphics/Display.cpp
new file mode 100644
index 0000000..22d2c62
--- /dev/null
+++ b/src/graphics/Display.cpp
@@ -0,0 +1,136 @@
+//
+//  libavg - Media Playback Engine. 
+//  Copyright (C) 2003-2014 Ulrich von Zadow
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library 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
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  Current versions can be found at www.libavg.de
+//
+
+#include "Display.h"
+#ifdef __linux__
+#include "X11Display.h"
+#endif
+#ifdef __APPLE__
+#include "AppleDisplay.h"
+#endif
+#ifdef _WIN32
+#include "WinDisplay.h"
+#endif
+#include "Bitmap.h"
+
+#include "../base/Logger.h"
+
+#include <SDL/SDL.h>
+#include <SDL/SDL_syswm.h>
+
+#include <iostream>
+
+using namespace std;
+
+namespace avg {
+
+DisplayPtr Display::s_pInstance = DisplayPtr();
+
+DisplayPtr Display::get()
+{
+    if (!s_pInstance) {
+#ifdef __linux__
+        s_pInstance = DisplayPtr(new X11Display());
+#elif defined __APPLE__
+        s_pInstance = DisplayPtr(new AppleDisplay());
+#elif defined _WIN32
+        s_pInstance = DisplayPtr(new WinDisplay());
+#else
+        AVG_ASSERT(false);
+#endif
+        s_pInstance->init();
+    }
+    return s_pInstance;
+}
+
+bool Display::isInitialized()
+{
+    return s_pInstance;
+}
+
+Display::Display()
+    : m_bAutoPPMM(true),
+      m_RefreshRate(0.0f)
+{
+}
+
+Display::~Display()
+{
+}
+
+void Display::init()
+{
+    m_ScreenResolution = queryScreenResolution();
+    m_PPMM = queryPPMM();
+}
+
+void Display::rereadScreenResolution()
+{
+    m_ScreenResolution = queryScreenResolution();
+    if (m_bAutoPPMM) {
+        m_PPMM = queryPPMM();
+    }
+}
+
+IntPoint Display::getScreenResolution()
+{
+    return m_ScreenResolution;
+}
+
+float Display::getPixelsPerMM()
+{
+    return m_PPMM;
+}
+
+void Display::assumePixelsPerMM(float ppmm)
+{
+    if (ppmm != 0) {
+        m_PPMM = ppmm;
+        m_bAutoPPMM = false;
+    }
+}
+
+glm::vec2 Display::getPhysicalScreenDimensions()
+{
+    glm::vec2 size;
+    glm::vec2 screenRes = glm::vec2(getScreenResolution());
+    size.x = screenRes.x/m_PPMM;
+    size.y = screenRes.y/m_PPMM;
+    return size;
+}
+
+IntPoint Display::queryScreenResolution()
+{
+    const SDL_VideoInfo* pInfo = SDL_GetVideoInfo();
+    return IntPoint(pInfo->current_w, pInfo->current_h);
+}
+
+float Display::getRefreshRate()
+{
+    if (m_RefreshRate == 0.0) {
+        m_RefreshRate = queryRefreshRate();
+        AVG_TRACE(Logger::category::CONFIG, Logger::severity::INFO,
+                "Vertical Refresh Rate: " << m_RefreshRate);
+    }
+    return m_RefreshRate;
+}
+
+}