mirror of
https://github.com/VDR4Arch/vdr.git
synced 2023-10-10 13:36:52 +02:00
366 lines
18 KiB
C++
366 lines
18 KiB
C++
/*
|
|
* osd.h: Abstract On Screen Display layer
|
|
*
|
|
* See the main source file 'vdr.c' for copyright information and
|
|
* how to reach the author.
|
|
*
|
|
* $Id: osd.h 1.46 2004/06/12 13:14:48 kls Exp $
|
|
*/
|
|
|
|
#ifndef __OSD_H
|
|
#define __OSD_H
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include "font.h"
|
|
|
|
#define MAXNUMCOLORS 256
|
|
|
|
enum {
|
|
//AARRGGBB
|
|
clrTransparent = 0x00000000,
|
|
clrGray50 = 0x7F000000, // 50% gray
|
|
clrBlack = 0xFF000000,
|
|
clrRed = 0xFFFC1414,
|
|
clrGreen = 0xFF24FC24,
|
|
clrYellow = 0xFFFCC024,
|
|
clrMagenta = 0xFFB000FC,
|
|
clrBlue = 0xFF0000FC,
|
|
clrCyan = 0xFF00FCFC,
|
|
clrWhite = 0xFFFCFCFC,
|
|
};
|
|
|
|
enum eOsdError { oeOk,
|
|
oeTooManyAreas,
|
|
oeTooManyColors,
|
|
oeBppNotSupported,
|
|
oeAreasOverlap,
|
|
oeWrongAlignment,
|
|
oeOutOfMemory,
|
|
oeUnknown,
|
|
};
|
|
|
|
typedef uint32_t tColor;
|
|
typedef uint8_t tIndex;
|
|
|
|
class cPalette {
|
|
private:
|
|
tColor color[MAXNUMCOLORS];
|
|
int bpp;
|
|
int maxColors, numColors;
|
|
bool modified;
|
|
protected:
|
|
typedef tIndex tIndexes[MAXNUMCOLORS];
|
|
public:
|
|
cPalette(int Bpp = 8);
|
|
///< Initializes the palette with the given color depth.
|
|
int Bpp(void) { return bpp; }
|
|
void Reset(void);
|
|
///< Resets the palette, making it contain no colors.
|
|
int Index(tColor Color);
|
|
///< Returns the index of the given Color (the first color has index 0).
|
|
///< If Color is not yet contained in this palette, it will be added if
|
|
///< there is a free slot. If the color can't be added to this palette,
|
|
///< 0 will be returned.
|
|
tColor Color(int Index) { return Index < maxColors ? color[Index] : 0; }
|
|
///< Returns the color at the given Index. If Index is outside the valid
|
|
///< range, 0 will be returned.
|
|
void SetBpp(int Bpp);
|
|
///< Sets the color depth of this palette to the given value.
|
|
///< The palette contents will be reset, so that it contains no colors.
|
|
void SetColor(int Index, tColor Color);
|
|
///< Sets the palette entry at Index to Color. If Index is larger than
|
|
///< the number of currently used entries in this palette, the entries
|
|
///< in between will have undefined values.
|
|
const tColor *Colors(int &NumColors);
|
|
///< Returns a pointer to the complete color table and stores the
|
|
///< number of valid entries in NumColors. If no colors have been
|
|
///< stored yet, NumColors will be set to 0 and the function will
|
|
///< return NULL.
|
|
void Take(const cPalette &Palette, tIndexes *Indexes = NULL, tColor ColorFg = 0, tColor ColorBg = 0);
|
|
///< Takes the colors from the given Palette and adds them to this palette,
|
|
///< using existing entries if possible. If Indexes is given, it will be
|
|
///< filled with the index values that each color of Palette has in this
|
|
///< palette. If either of ColorFg or ColorBg is not zero, the first color
|
|
///< in Palette will be taken as ColorBg, and the second color will become
|
|
///< ColorFg.
|
|
};
|
|
|
|
enum eTextAlignment { taCenter = 0x00,
|
|
taLeft = 0x01,
|
|
taRight = 0x02,
|
|
taTop = 0x04,
|
|
taBottom = 0x08,
|
|
taDefault = taTop | taLeft
|
|
};
|
|
|
|
class cBitmap : public cPalette {
|
|
private:
|
|
tIndex *bitmap;
|
|
int x0, y0;
|
|
int width, height;
|
|
int dirtyX1, dirtyY1, dirtyX2, dirtyY2;
|
|
public:
|
|
cBitmap(int Width, int Height, int Bpp, int X0 = 0, int Y0 = 0);
|
|
///< Creates a bitmap with the given Width, Height and color depth (Bpp).
|
|
///< X0 and Y0 define the offset at which this bitmap will be located on the OSD.
|
|
///< All coordinates given in the other functions will be relative to
|
|
///< this offset (unless specified otherwise).
|
|
cBitmap(const char *FileName);
|
|
///< Creates a bitmap and loads an XPM image from the given file.
|
|
cBitmap(char *Xpm[]);
|
|
///< Creates a bitmap from the given XPM data.
|
|
virtual ~cBitmap();
|
|
int X0(void) const { return x0; }
|
|
int Y0(void) const { return y0; }
|
|
int Width(void) const { return width; }
|
|
int Height(void) const { return height; }
|
|
void SetSize(int Width, int Height);
|
|
///< Sets the size of this bitmap to the given values. Any previous
|
|
///< contents of the bitmap will be lost. If Width and Height are the same
|
|
///< as the current values, nothing will happen and the bitmap remains
|
|
///< unchanged.
|
|
bool Contains(int x, int y) const;
|
|
///< Returns true if this bitmap contains the point (x, y).
|
|
bool Covers(int x1, int y1, int x2, int y2) const;
|
|
///< Returns true if the rectangle defined by the given coordinates
|
|
///< completely covers this bitmap.
|
|
bool Intersects(int x1, int y1, int x2, int y2) const;
|
|
///< Returns true if the rectangle defined by the given coordinates
|
|
///< intersects with this bitmap.
|
|
bool Dirty(int &x1, int &y1, int &x2, int &y2);
|
|
///< Tells whether there is a dirty area and returns the bounding
|
|
///< rectangle of that area (relative to the bitmaps origin).
|
|
void Clean(void);
|
|
///< Marks the dirty area as clean.
|
|
bool LoadXpm(const char *FileName);
|
|
///< Calls SetXpm() with the data from the file FileName.
|
|
///< Returns true if the operation was successful.
|
|
bool SetXpm(char *Xpm[], bool IgnoreNone = false);
|
|
///< Sets this bitmap to the given XPM data. Any previous bitmap or
|
|
///< palette data will be overwritten with the new data.
|
|
///< If IgnoreNone is true, a "none" color entry will be ignored.
|
|
///< Only set IgnoreNone to true if you know that there is a "none"
|
|
///< color entry in the XPM data and that this entry is not used!
|
|
///< If SetXpm() is called with IgnoreNone set to false and the XPM
|
|
///< data contains an unused "none" entry, it will be automatically
|
|
///< called again with IgnoreNone set to true.
|
|
///< Returns true if the operation was successful.
|
|
void SetIndex(int x, int y, tIndex Index);
|
|
///< Sets the index at the given coordinates to Index.
|
|
///< Coordinates are relative to the bitmap's origin.
|
|
void DrawPixel(int x, int y, tColor Color);
|
|
///< Sets the pixel at the given coordinates to the given Color, which is
|
|
///< a full 32 bit ARGB value.
|
|
///< If the coordinates are outside the bitmap area, no pixel will be set.
|
|
void DrawBitmap(int x, int y, const cBitmap &Bitmap, tColor ColorFg = 0, tColor ColorBg = 0);
|
|
///< Sets the pixels in this bitmap with the data from the given
|
|
///< Bitmap, putting the upper left corner of the Bitmap at (x, y).
|
|
///< If ColorFg or ColorBg is given, the first palette entry of the Bitmap
|
|
///< will be mapped to ColorBg and the second palette entry will be mapped to
|
|
///< ColorFg (palette indexes are defined so that 0 is the background and
|
|
///< 1 is the foreground color).
|
|
void DrawText(int x, int y, const char *s, tColor ColorFg, tColor ColorBg, const cFont *Font, int Width = 0, int Height = 0, int Alignment = taDefault);
|
|
///< Draws the given string at coordinates (x, y) with the given foreground
|
|
///< and background color and font. If Width and Height are given, the text
|
|
///< will be drawn into a rectangle with the given size and the given
|
|
///< Alignment (default is top-left). If ColorBg is clrTransparent, no
|
|
///< background pixels will be drawn, which allows drawing "transparent" text.
|
|
void DrawRectangle(int x1, int y1, int x2, int y2, tColor Color);
|
|
///< Draws a filled rectangle defined by the upper left (x1, y1) and lower right
|
|
///< (x2, y2) corners with the given Color. If the rectangle covers the entire
|
|
///< bitmap area, the color palette will be reset, so that new colors can be
|
|
///< used for drawing.
|
|
void DrawEllipse(int x1, int y1, int x2, int y2, tColor Color, int Quadrants = 0);
|
|
///< Draws a filled ellipse defined by the upper left (x1, y1) and lower right
|
|
///< (x2, y2) corners with the given Color. Quadrants controls which parts of
|
|
///< the ellipse are actually drawn:
|
|
///< 0 draws the entire ellipse
|
|
///< 1..4 draws only the first, second, third or fourth quadrant, respectively
|
|
///< 5..8 draws the right, top, left or bottom half, respectively
|
|
///< -1..-8 draws the inverted part of the given quadrant(s)
|
|
///< If Quadrants is not 0, the coordinates are those of the actual area, not
|
|
///< the full circle!
|
|
void DrawSlope(int x1, int y1, int x2, int y2, tColor Color, int Type);
|
|
///< Draws a "slope" into the rectangle defined by the upper left (x1, y1) and
|
|
///< lower right (x2, y2) corners with the given Color. Type controls the
|
|
///< direction of the slope and which side of it will be drawn:
|
|
///< 0: horizontal, rising, lower
|
|
///< 1: horizontal, rising, upper
|
|
///< 2: horizontal, falling, lower
|
|
///< 3: horizontal, falling, upper
|
|
///< 4: vertical, rising, lower
|
|
///< 5: vertical, rising, upper
|
|
///< 6: vertical, falling, lower
|
|
///< 7: vertical, falling, upper
|
|
const tIndex *Data(int x, int y);
|
|
///< Returns the address of the index byte at the given coordinates.
|
|
};
|
|
|
|
struct tArea {
|
|
int x1, y1, x2, y2;
|
|
int bpp;
|
|
int Width(void) const { return x2 - x1 + 1; }
|
|
int Height(void) const { return y2 - y1 + 1; }
|
|
bool Intersects(const tArea &Area) const { return !(x2 < Area.x1 || x1 > Area.x2 || y2 < Area.y1 || y1 > Area.y2); }
|
|
};
|
|
|
|
#define MAXOSDAREAS 16
|
|
|
|
class cOsd {
|
|
friend class cOsdProvider;
|
|
private:
|
|
static bool isOpen;
|
|
cBitmap *savedRegion;
|
|
cBitmap *bitmaps[MAXOSDAREAS];
|
|
int numBitmaps;
|
|
int left, top, width, height;
|
|
protected:
|
|
cOsd(int Left, int Top);
|
|
///< Initializes the OSD with the given coordinates.
|
|
///< By default it is assumed that the full area will be able to display
|
|
///< full 32 bit graphics (ARGB with eight bit for each color and the alpha
|
|
///< value, repectively). However, the actual hardware in use may not be
|
|
///< able to display such a high resolution OSD, so there is an option to
|
|
///< divide the full OSD area into several sub-areas with lower color depths
|
|
///< and individual palettes. The sub-areas need not necessarily cover the
|
|
///< entire OSD area, but only the OSD area actually covered by sub-areas
|
|
///< will be available for drawing.
|
|
///< At least one area must be defined in order to set the actual width and
|
|
///< height of the OSD. Also, the caller must first try to use an area that
|
|
///< consists of only one sub-area that covers the entire drawing space,
|
|
///< and should require only the minimum necessary color depth. This is
|
|
///< because a derived cOsd class may or may not be able to handle more
|
|
///< than one area.
|
|
public:
|
|
virtual ~cOsd();
|
|
///< Shuts down the OSD.
|
|
static bool IsOpen(void) { return isOpen; }
|
|
int Left(void) { return left; }
|
|
int Top(void) { return top; }
|
|
int Width(void) { return width; }
|
|
int Height(void) { return height; }
|
|
cBitmap *GetBitmap(int Area);
|
|
///< Returns a pointer to the bitmap for the given Area, or NULL if no
|
|
///< such bitmap exists.
|
|
virtual eOsdError CanHandleAreas(const tArea *Areas, int NumAreas);
|
|
///< Checks whether the OSD can display the given set of sub-areas.
|
|
///< The return value indicates whether a call to SetAreas() with this
|
|
///< set of areas will succeed. CanHandleAreas() may be called with an
|
|
///< OSD that is already in use with other areas and will not interfere
|
|
///< with the current operation of the OSD.
|
|
///< A derived class must first call the base class CanHandleAreas()
|
|
///< to check the basic conditions, like not overlapping etc.
|
|
virtual eOsdError SetAreas(const tArea *Areas, int NumAreas);
|
|
///< Sets the sub-areas to the given areas.
|
|
///< The return value indicates whether the operation was successful.
|
|
///< If an error is reported, nothing will have changed and the previous
|
|
///< OSD (if any) will still be displayed as before.
|
|
///< If the OSD has been divided into several sub-areas, all areas that
|
|
///< are part of the rectangle that surrounds a given drawing operation
|
|
///< will be drawn into, with the proper offsets.
|
|
virtual void SaveRegion(int x1, int y1, int x2, int y2);
|
|
///< Saves the region defined by the given coordinates for later restoration
|
|
///< through RestoreRegion(). Only one saved region can be active at any
|
|
///< given time.
|
|
virtual void RestoreRegion(void);
|
|
///< Restores the region previously saved by a call to SaveRegion().
|
|
///< If SaveRegion() has not been called before, nothing will happen.
|
|
virtual eOsdError SetPalette(const cPalette &Palette, int Area);
|
|
///< Sets the Palette for the given Area (the first area is numbered 0).
|
|
virtual void DrawPixel(int x, int y, tColor Color);
|
|
///< Sets the pixel at the given coordinates to the given Color, which is
|
|
///< a full 32 bit ARGB value.
|
|
///< If the OSD area has been divided into separate sub-areas, and the
|
|
///< given coordinates don't fall into any of these sub-areas, no pixel will
|
|
///< be set.
|
|
virtual void DrawBitmap(int x, int y, const cBitmap &Bitmap, tColor ColorFg = 0, tColor ColorBg = 0);
|
|
///< Sets the pixels in the OSD with the data from the given
|
|
///< Bitmap, putting the upper left corner of the Bitmap at (x, y).
|
|
///< If ColorFg or ColorBg is given, the first palette entry of the Bitmap
|
|
///< will be mapped to ColorBg and the second palette entry will be mapped to
|
|
///< ColorFg (palette indexes are defined so that 0 is the background and
|
|
///< 1 is the foreground color).
|
|
virtual void DrawText(int x, int y, const char *s, tColor ColorFg, tColor ColorBg, const cFont *Font, int Width = 0, int Height = 0, int Alignment = taDefault);
|
|
///< Draws the given string at coordinates (x, y) with the given foreground
|
|
///< and background color and font. If Width and Height are given, the text
|
|
///< will be drawn into a rectangle with the given size and the given
|
|
///< Alignment (default is top-left). If ColorBg is clrTransparent, no
|
|
///< background pixels will be drawn, which allows drawing "transparent" text.
|
|
virtual void DrawRectangle(int x1, int y1, int x2, int y2, tColor Color);
|
|
///< Draws a filled rectangle defined by the upper left (x1, y1) and lower right
|
|
///< (x2, y2) corners with the given Color.
|
|
virtual void DrawEllipse(int x1, int y1, int x2, int y2, tColor Color, int Quadrants = 0);
|
|
///< Draws a filled ellipse defined by the upper left (x1, y1) and lower right
|
|
///< (x2, y2) corners with the given Color. Quadrants controls which parts of
|
|
///< the ellipse are actually drawn:
|
|
///< 0 draws the entire ellipse
|
|
///< 1..4 draws only the first, second, third or fourth quadrant, respectively
|
|
///< 5..8 draws the right, top, left or bottom half, respectively
|
|
///< -1..-8 draws the inverted part of the given quadrant(s)
|
|
///< If Quadrants is not 0, the coordinates are those of the actual area, not
|
|
///< the full circle!
|
|
virtual void DrawSlope(int x1, int y1, int x2, int y2, tColor Color, int Type);
|
|
///< Draws a "slope" into the rectangle defined by the upper left (x1, y1) and
|
|
///< lower right (x2, y2) corners with the given Color. Type controls the
|
|
///< direction of the slope and which side of it will be drawn:
|
|
///< 0: horizontal, rising, lower
|
|
///< 1: horizontal, rising, upper
|
|
///< 2: horizontal, falling, lower
|
|
///< 3: horizontal, falling, upper
|
|
///< 4: vertical, rising, lower
|
|
///< 5: vertical, rising, upper
|
|
///< 6: vertical, falling, lower
|
|
///< 7: vertical, falling, upper
|
|
virtual void Flush(void);
|
|
///< Actually commits all data to the OSD hardware.
|
|
};
|
|
|
|
class cOsdProvider {
|
|
private:
|
|
static cOsdProvider *osdProvider;
|
|
protected:
|
|
virtual cOsd *CreateOsd(int Left, int Top) = 0;
|
|
///< Returns a pointer to a newly created cOsd object, which will be located
|
|
///< at the given coordinates.
|
|
public:
|
|
cOsdProvider(void);
|
|
//XXX maybe parameter to make this one "sticky"??? (frame-buffer etc.)
|
|
virtual ~cOsdProvider();
|
|
static cOsd *NewOsd(int Left, int Top);
|
|
///< Returns a pointer to a newly created cOsd object, which will be located
|
|
///< at the given coordinates. When the cOsd object is no longer needed, the
|
|
///< caller must delete it.
|
|
static void Shutdown(void);
|
|
///< Shuts down the OSD provider facility by deleting the current OSD provider.
|
|
};
|
|
|
|
class cTextScroller {
|
|
private:
|
|
cOsd *osd;
|
|
int left, top, width, height;
|
|
const cFont *font;
|
|
tColor colorFg, colorBg;
|
|
int offset, shown;
|
|
cTextWrapper textWrapper;
|
|
void DrawText(void);
|
|
public:
|
|
cTextScroller(void);
|
|
cTextScroller(cOsd *Osd, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg);
|
|
void Set(cOsd *Osd, int Left, int Top, int Width, int Height, const char *Text, const cFont *Font, tColor ColorFg, tColor ColorBg);
|
|
void Reset(void);
|
|
int Left(void) { return left; }
|
|
int Top(void) { return top; }
|
|
int Width(void) { return width; }
|
|
int Height(void) { return height; }
|
|
int Total(void) { return textWrapper.Lines(); }
|
|
int Offset(void) { return offset; }
|
|
int Shown(void) { return shown; }
|
|
bool CanScroll(void) { return CanScrollUp() || CanScrollDown(); }
|
|
bool CanScrollUp(void) { return offset > 0; }
|
|
bool CanScrollDown(void) { return offset + shown < Total(); }
|
|
void Scroll(bool Up, bool Page);
|
|
};
|
|
|
|
#endif //__OSD_H
|