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/*
* targavfd plugin for VDR (C++)
*
* (C) 2010 Andreas Brachold <vdr07 AT deltab de>
*
* This targavfd plugin 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, version 3 of the License.
*
* See the files README and COPYING for details.
*
*/
#include <vdr/tools.h>
#include "bitmap.h"
/**
* Ctor - Create framebuffer
*
* \param w count of horizontal columns.
* \param h count of vertical rows.
*/
cVFDBitmap::cVFDBitmap(int w, int h) {
width = w;
height = h;
// lines are byte aligned
bytesPerLine = (width + 7) / 8;
if(0<height && 0<bytesPerLine)
bitmap = MALLOC(uchar, bytesPerLine * height);
clear();
}
/**
* Ctor - Create empty framebuffer
*/
cVFDBitmap::cVFDBitmap() {
height = 0;
width = 0;
bitmap = NULL;
}
/**
* Dtor - Destroy framebuffer
*/
cVFDBitmap::~cVFDBitmap() {
if(bitmap)
free(bitmap);
bitmap = NULL;
}
/**
* Compare current framebuffer.
*/
cVFDBitmap& cVFDBitmap::operator = (const cVFDBitmap& x) {
if(height != x.height
|| width != x.width
|| bitmap == NULL) {
if(bitmap)
free(bitmap);
bitmap = NULL;
height = x.height;
width = x.width;
bytesPerLine = (width + 7) / 8;
if(0<height && 0<bytesPerLine)
bitmap = MALLOC(uchar, bytesPerLine * height);
}
if(bitmap && x.bitmap)
memcpy(bitmap, x.bitmap, bytesPerLine * height);
return *this;
}
/**
* Copy current framebuffer.
*/
bool cVFDBitmap::operator == (const cVFDBitmap& x) const {
if(height != x.height
|| width != x.width
|| bitmap == NULL
|| x.bitmap == NULL)
return false;
return ((memcmp(x.bitmap, bitmap, bytesPerLine * height)) == 0);
}
/**
* Cleanup current framebuffer.
*/
void cVFDBitmap::clear() {
if (bitmap)
memset(bitmap, 0x00, bytesPerLine * height);
}
/**
* Draw a single pixel framebuffer.
*
* \param x horizontal column.
* \param y vertical row.
*/
bool cVFDBitmap::SetPixel(int x, int y)
{
unsigned char c;
unsigned int n;
if (!bitmap)
return false;
if (x >= width || x < 0)
return false;
if (y >= height || y < 0)
return false;
n = x + ((y / 8) * width);
c = 0x80 >> (y % 8);
if(n >= (bytesPerLine * height))
return false;
bitmap[n] |= c;
return true;
}
/**
* Draw a horizontal line on framebuffer.
*
* \param x1 First horizontal column.
* \param y vertical row.
* \param x2 Second horizontal column.
*/
bool cVFDBitmap::HLine(int x1, int y, int x2) {
sort(x1,x2);
for (int x = x1; x <= x2; x++) {
if(!SetPixel(x, y))
return false;
}
return true;
}
/**
* Draw a vertical line on framebuffer.
*
* \param x horizontal column.
* \param y1 First vertical row.
* \param y2 Second vertical row.
*/
bool cVFDBitmap::VLine(int x, int y1, int y2) {
sort(y1,y2);
for (int y = y1; y <= y2; y++) {
if(!SetPixel(x, y))
return false;
}
return true;
}
/**
* Draw a rectangle on framebuffer.
*
* \param x1 First horizontal corner (column).
* \param y1 First vertical corner (row).
* \param x2 Second horizontal corner (column).
* \param y2 Second vertical corner (row).
* \param filled drawing of rectangle should be filled.
*/
bool cVFDBitmap::Rectangle(int x1, int y1, int x2, int y2, bool filled) {
if (!filled) {
return HLine(x1, y1, x2)
&& VLine(x1, y1, y2)
&& HLine(x1, y2, x2)
&& VLine(x2, y1, y2);
} else {
sort(y1,y2);
for (int y = y1; y <= y2; y++) {
if(!HLine(x1, y, x2))
return false;
}
return true;
}
}
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