Initial commit of version 0.5.1v0.5.1release/v0.5.1

1 files changed, 131 insertions, 0 deletions

diff --git a/display.h b/display.h
new file mode 100644
index 0000000..37c76c2
--- /dev/null
+++ b/display.h
@@ -0,0 +1,131 @@
+/***************************************************************************
+ *                                                                         *
+ *   display.h - Actual implementation of OSD display variants and         *
+ *               Display:: namespace that encapsulates a single cDisplay.  *
+ *                                                                         *
+ *   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.                                   *
+ *                                                                         *
+ *   Changelog:                                                            *
+ *     2005-03    initial version (c) Udo Richter                          *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef OSDTELETEXT_DISPLAY_H_
+#define OSDTELETEXT_DISPLAY_H_
+
+#include "displaybase.h"
+#include <vdr/osd.h>
+
+namespace Display {
+    // The Display:: namespace mainly encapsulates a cDisplay *display variable
+    // and allows NULL-safe access to display members.
+    // Additionally, selects via mode the actually used instance for *display.
+    
+    enum Mode { Full, HalfUpper, HalfLower };
+    // Full mode: 2BPP or 4BPP full screen display, depending on memory constrains
+    // HalfUpper: 4BPP display of upper half, drop lower half if out of memory
+    // HalfLower: 4BPP display of lower half, drop upper half if out of memory
+    
+    extern Mode mode;
+    extern cDisplay *display;
+
+    // Access to display mode:
+    void SetMode(Display::Mode mode);
+    inline void Delete()
+        { if (display) { delete display; display=NULL; } }
+    
+    void ShowUpperHalf();
+    // Make sure the upper half of screen is visible
+    // eg. for entering numbers etc.
+
+
+    // Wrapper calls for various *display members:
+    inline bool GetBlink() 
+        { if (display) return display->GetBlink(); else return false; }
+    inline bool SetBlink(bool blink) 
+        { if (display) display->SetBlink(blink); else return false; }
+    inline bool GetConceal() 
+        { if (display) return display->GetConceal(); else return false; }
+    inline bool SetConceal(bool conceal) 
+        { if (display) display->SetConceal(conceal); else return false; }
+    inline cDisplay::enumZoom GetZoom() 
+        { if (display) return display->GetZoom(); else return cDisplay::Zoom_Off; }
+    inline void SetZoom(cDisplay::enumZoom zoom)
+        { if (display) display->SetZoom(zoom); }
+
+    inline void SetBackgroundColor(tColor c)
+        { if (display) display->SetBackgroundColor(c); }
+        
+    inline tColor GetBackgroundColor() 
+        { if (display) return display->GetBackgroundColor(); else return 0; }
+
+    inline void HoldFlush() 
+        { if (display) display->HoldFlush(); }
+    inline void ReleaseFlush() 
+        { if (display) display->ReleaseFlush(); }
+
+    inline void RenderTeletextCode(unsigned char *PageCode)
+        { if (display) display->RenderTeletextCode(PageCode); }
+    
+    inline void DrawClock()
+        { if (display) display->DrawClock(); }
+    inline void DrawPageId(const char *text)
+        { if (display) display->DrawPageId(text); }
+    inline void DrawMessage(const char *txt)
+        { if (display) display->DrawMessage(txt); }
+    inline void ClearMessage()
+        { if (display) display->ClearMessage(); }
+}
+
+
+
+
+class cDisplay2BPP : public cDisplay {
+    // 2BPP (4 color) OSD display
+    // Use static color mapping to limit color depth
+    
+public:
+    cDisplay2BPP(int x0, int y0, int width, int height);
+
+    virtual tColor GetColorRGB(enumTeletextColor ttc, int Area);
+    virtual tColor GetColorRGBAlternate(enumTeletextColor ttc, int Area);
+};
+
+
+
+class cDisplay4BPP : public cDisplay {
+    // 4BPP (16 color) OSD display
+    // No need for color mapping
+public:
+    cDisplay4BPP(int x0, int y0, int width, int height);
+};
+
+
+
+
+class cDisplay4BPPHalf : public cDisplay {
+    // 4BPP (16 color) OSD display with auto size reduction on memory constrains
+    // Automatically tries to make visible area as big as possible
+    // No need for color mapping
+    bool Upper;
+    // Prefer to show upper half or lower half?
+    
+    int OsdX0,OsdY0; 
+    // Needed to re-initialize osd
+
+public:
+    cDisplay4BPPHalf(int x0, int y0, int width, int height, bool upper);
+    bool GetUpper() { return Upper; }
+    void SetUpper(bool upper) 
+        { if (Upper!=upper) { Upper=upper; InitOSD(); } }
+protected:
+    void InitOSD();
+};
+
+
+
+
+#endif