StuBS
AbstractGraphicsPrinter Class Referenceabstract

Abstraction of basic graphics printing functions. More...

#include <printer.h>

Inheritance diagram for AbstractGraphicsPrinter:

Public Member Functions

virtual void init (unsigned width, unsigned height, unsigned pitch)=0
 Initialize printer with actual screen dimensions.
 
virtual void buffer (void *lfb)=0
 Set the video memory address.
 
virtual void clear ()=0
 Clear all pixel of the current back buffer (set full screen to black)
 
virtual bool valid (const Point &p) const =0
 Check if a Point can be displayed at the current resolution.
 
virtual unsigned height () const =0
 Number of vertical pixels in current resolution.
 
virtual unsigned width () const =0
 Number of horizontal pixels in current resolution.
 
virtual void pixel (const Point &p, const Color &color)=0
 Draw a pixel.
 
virtual void pixel (const Point &p, const ColorAlpha &color)=0
 Draw a pixel.
 
virtual void line (const Point &start, const Point &end, const Color &color)=0
 Draw a line.
 
virtual void line (const Point &start, const Point &end, const ColorAlpha &color)=0
 Draw a line.
 
virtual void rectangle (const Point &start, const Point &end, const Color &color, bool filled=true)=0
 Draw a rectangle on the current back buffer.
 
virtual void rectangle (const Point &start, const Point &end, const ColorAlpha &color, bool filled=true)=0
 Draw a rectangle on the current back buffer.
 
virtual void font (const Font &new_font)=0
 Change the current font for text output in video mode.
 
virtual void text (const Point &p, const char *string, unsigned len, const Color &color, const Font *font=nullptr)=0
 Print text (without automatic word wrap).
 
virtual void text (const Point &p, const char *string, unsigned len, const ColorAlpha &color, const Font *font=nullptr)=0
 Print text (without automatic word wrap).
 
virtual void image (const Point &p, PNG &image, unsigned width=0, unsigned height=0, unsigned offset_x=0, unsigned offset_y=0)=0
 Draw a PNG image (or detail)
 
virtual void image (const Point &p, const GIMP &image, unsigned width=0, unsigned height=0, unsigned offset_x=0, unsigned offset_y=0)=0
 Draw a GIMP image (or detail)
 
virtual void image (const Point &p, const Color *image, unsigned width, unsigned height, unsigned offset_x=0, unsigned offset_y=0)=0
 Draw a sprite.
 
virtual void image (const Point &p, const ColorAlpha *image, unsigned width, unsigned height, unsigned offset_x=0, unsigned offset_y=0)=0
 Draw a sprite with alpha blending (transparency).
 

Protected Member Functions

virtual bool checkMode (uint8_t colordepth, uint8_t offset_red, uint8_t offset_green, uint8_t offset_blue, uint8_t bits_red, uint8_t bits_green, uint8_t bits_blue)=0
 Check if a printer is available for a video mode.
 

Detailed Description

Abstraction of basic graphics printing functions.

The actual implementation is placed in the inherited template class GraphicsPrinter for performance reasons.

Member Function Documentation

◆ buffer()

virtual void AbstractGraphicsPrinter::buffer ( void *  lfb)
pure virtual

Set the video memory address.

Parameters
lfbpointer to the linear framebuffer (lfb)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ checkMode()

virtual bool AbstractGraphicsPrinter::checkMode ( uint8_t  colordepth,
uint8_t  offset_red,
uint8_t  offset_green,
uint8_t  offset_blue,
uint8_t  bits_red,
uint8_t  bits_green,
uint8_t  bits_blue 
)
protectedpure virtual

Check if a printer is available for a video mode.

This is required since printers are defined during compile time for performance reasons.

Template Parameters
colordepthcolor depth of video mode
offset_redBit position of red color mask in video mode
offset_greenBit position of green color mask in video mode
offset_blueBit position of blue color mask in video mode
bits_redSize of red color mask in video mode
bits_greenSize of green color mask in video mode
bits_blueSize of blue color mask in video mode
Returns
true if a printer for the video mode is available

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ font()

virtual void AbstractGraphicsPrinter::font ( const Font new_font)
pure virtual

Change the current font for text output in video mode.

Parameters
new_fontFont to be used on subsequent calls to AbstractGraphicsPrinter::text() (without explicit font parameter)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ height()

virtual unsigned AbstractGraphicsPrinter::height ( ) const
pure virtual

Number of vertical pixels in current resolution.

Returns
Height of the screen in current video mode

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ image() [1/4]

virtual void AbstractGraphicsPrinter::image ( const Point p,
const Color *  image,
unsigned  width,
unsigned  height,
unsigned  offset_x = 0,
unsigned  offset_y = 0 
)
pure virtual

Draw a sprite.

Each element in the source array will be displayed as a single pixel.

Parameters
pCoordinate of the sprites upper left corner
imageSource sprite to display
widthWidth of the sprite detail
heightHeight of the sprite detail
offset_xRight offset of the source sprite
offset_yTop offset of the source sprite

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ image() [2/4]

virtual void AbstractGraphicsPrinter::image ( const Point p,
const ColorAlpha *  image,
unsigned  width,
unsigned  height,
unsigned  offset_x = 0,
unsigned  offset_y = 0 
)
pure virtual

Draw a sprite with alpha blending (transparency).

Each element in the source array will be displayed as a single pixel.

Parameters
pCoordinate of the sprites upper left corner
imageSource sprite to display
widthWidth of the sprite detail
heightHeight of the sprite detail
offset_xRight offset of the source sprite
offset_yTop offset of the source sprite

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ image() [3/4]

virtual void AbstractGraphicsPrinter::image ( const Point p,
const GIMP image,
unsigned  width = 0,
unsigned  height = 0,
unsigned  offset_x = 0,
unsigned  offset_y = 0 
)
pure virtual

Draw a GIMP image (or detail)

The image has to be exported as C-source (without Glib types!) in GIMP, alpha blending (transparency) is supported.

Parameters
pCoordinate of the images upper left corner
imageSource image to display
widthWidth of the image detail (full image width of the source image if zero/default value)
heightHeight of the image detail (full image height of the source if zero/default value)
offset_xRight offset of the source image
offset_yTop offset of the source image

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ image() [4/4]

virtual void AbstractGraphicsPrinter::image ( const Point p,
PNG image,
unsigned  width = 0,
unsigned  height = 0,
unsigned  offset_x = 0,
unsigned  offset_y = 0 
)
pure virtual

Draw a PNG image (or detail)

The image can has to be in a supported PNG format. Alpha blending (transparency) is supported.

Parameters
pCoordinate of the images upper left corner
imageSource image to display
widthWidth of the image detail (full image width of the source image if zero/default value)
heightHeight of the image detail (full image height of the source if zero/default value)
offset_xRight offset of the source image
offset_yTop offset of the source image

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ init()

virtual void AbstractGraphicsPrinter::init ( unsigned  width,
unsigned  height,
unsigned  pitch 
)
pure virtual

Initialize printer with actual screen dimensions.

Parameters
widthvisible width of graphics screen
heightvisible height of graphics screen
pitchwidth of graphics screen (including invisible part, has to be at least width)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ line() [1/2]

virtual void AbstractGraphicsPrinter::line ( const Point start,
const Point end,
const Color &  color 
)
pure virtual

Draw a line.

Parameters
startCoordinates of the begin of the line
endCoordinates of the end of the line
colorColor of the line

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ line() [2/2]

virtual void AbstractGraphicsPrinter::line ( const Point start,
const Point end,
const ColorAlpha &  color 
)
pure virtual

Draw a line.

Parameters
startCoordinates of the begin of the line
endCoordinates of the end of the line
colorColor of the line

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ pixel() [1/2]

virtual void AbstractGraphicsPrinter::pixel ( const Point p,
const Color &  color 
)
pure virtual

Draw a pixel.

Parameters
pCoordinates of the pixel
colorColor of the pixel

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ pixel() [2/2]

virtual void AbstractGraphicsPrinter::pixel ( const Point p,
const ColorAlpha &  color 
)
pure virtual

Draw a pixel.

Parameters
pCoordinates of the pixel
colorColor of the pixel

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ rectangle() [1/2]

virtual void AbstractGraphicsPrinter::rectangle ( const Point start,
const Point end,
const Color &  color,
bool  filled = true 
)
pure virtual

Draw a rectangle on the current back buffer.

Parameters
startCoordinate of the rectangles upper left corner
endCoordinate of the rectangles lower right corner
colorColor of the rectangle
filledIf set, the rectangle will be filled with the same color. (otherwise only borders will be drawn)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ rectangle() [2/2]

virtual void AbstractGraphicsPrinter::rectangle ( const Point start,
const Point end,
const ColorAlpha &  color,
bool  filled = true 
)
pure virtual

Draw a rectangle on the current back buffer.

Parameters
startCoordinate of the rectangles upper left corner
endCoordinate of the rectangles lower right corner
colorColor of the rectangle
filledIf set, the rectangle will be filled with the same color. (otherwise only borders will be drawn)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ text() [1/2]

virtual void AbstractGraphicsPrinter::text ( const Point p,
const char *  string,
unsigned  len,
const Color &  color,
const Font font = nullptr 
)
pure virtual

Print text (without automatic word wrap).

Parameters
pUpper left start position of the text
stringPointer to char array containing the text to be displayed
lenNumber of characters to be displayed
colorColor for the text characters
fontExplicit font – or nullptr to use default font (set by font method)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ text() [2/2]

virtual void AbstractGraphicsPrinter::text ( const Point p,
const char *  string,
unsigned  len,
const ColorAlpha &  color,
const Font font = nullptr 
)
pure virtual

Print text (without automatic word wrap).

Parameters
pUpper left start position of the text
stringPointer to char array containing the text to be displayed
lenNumber of characters to be displayed
colorColor for the text characters
fontExplicit font – or nullptr to use default font (set by font method)

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ valid()

virtual bool AbstractGraphicsPrinter::valid ( const Point p) const
pure virtual

Check if a Point can be displayed at the current resolution.

Parameters
pCoordinates to check
Returns
'true' if can be displayed

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.

◆ width()

virtual unsigned AbstractGraphicsPrinter::width ( ) const
pure virtual

Number of horizontal pixels in current resolution.

Returns
Width of the screen in current video mode

Implemented in GraphicsPrinter< COLORDEPTH, OFFSET_RED, OFFSET_GREEN, OFFSET_BLUE, BITS_RED, BITS_GREEN, BITS_BLUE >.


The documentation for this class was generated from the following files: