1 files changed, 143 insertions, 0 deletions
diff --git a/src/image.cpp b/src/image.cpp
new file mode 100644
index 0000000..384de9a
--- /dev/null
+++ b/src/image.cpp
@@ -0,0 +1,143 @@
+#include "image.h"
+#include "palette.h"
+#include "font.h"
+#include <stdlib.h>
+#include <string.h>
+#include <png.h>
+Image::Image() :
+    iWidth( 0 ),
+    iHeight( 0 ),
+    pPix( NULL )
+{
+}
+Image::Image( int32_t iWidth, int32_t iHeight ) :
+    iWidth( iWidth ),
+    iHeight( iHeight ),
+    pPix( NULL )
+{
+    pPix = new uint8_t[iWidth*iHeight];
+    clear();
+}
+Image::~Image()
+{
+    delete[] pPix;
+}
+void Image::clear( uint8_t uColor )
+{
+    memset( pPix, uColor, iWidth*iHeight );
+}
+void Image::set( int32_t x, int32_t y, uint8_t iCol )
+{
+    if( x < 0 || y < 0 || x >= iWidth || y >= iHeight )
+        return;
+    pPix[x+y*iWidth] = iCol;
+}
+void Image::save( const char *sPath, class Palette &rPal )
+{
+    uint8_t **pRows = new uint8_t*[iHeight];
+    for( int r = 0; r < iHeight; r++ )
+    {
+        pRows[r] = pPix+(iWidth*r);
+    }
+    png_structp png_ptr = png_create_write_struct(
+        PNG_LIBPNG_VER_STRING, NULL, NULL, NULL
+        );
+    png_infop info_ptr = png_create_info_struct(png_ptr);
+    png_set_IHDR(png_ptr, info_ptr, iWidth, iHeight,
+        8, PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
+        PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT
+        );
+    png_color *pCol = new png_color[rPal.getCount()];
+    for( int j = 0; j < rPal.getCount(); j++ )
+    {
+        uint8_t r, g, b;
+        rPal.getColor( j, r, g, b );
+        pCol[j].red = r;
+        pCol[j].green = g;
+        pCol[j].blue = b;
+    }
+    png_set_PLTE( png_ptr, info_ptr, pCol, rPal.getCount());
+    png_set_rows( png_ptr, info_ptr, pRows );
+    FILE *fp = fopen(sPath, "wb");
+    if( fp == NULL )
+    {
+        printf("Error opening file!\n");
+        exit( 1 );
+    }
+    
+    png_init_io( png_ptr, fp );
+    png_write_png( png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL );
+    png_destroy_write_struct( &png_ptr, &info_ptr );
+    fclose( fp );
+    delete[] pCol;
+    delete[] pRows;
+}
+void Image::drawText( class Font &rFnt, int32_t x, int32_t y, uint8_t uColor,
+        const char *sText )
+{
+    for( const char *s = sText; *s; s++ )
+    {
+        Font::Glyph *pGlyph = rFnt.get( *s );
+        if( pGlyph == NULL )
+            continue;
+        for( int cy = 0; cy < pGlyph->pBox.y; cy++ )
+        {
+            for( int cx = 0; cx < pGlyph->pBox.x; cx++ )
+            {
+                int bit = 1<<(7-(cx%8));
+                int byte = cx/8;
+                if( pGlyph->pData[byte+cy*pGlyph->iRowBytes]&bit )
+                    set( x+cx, y+cy-pGlyph->pBox.y-pGlyph->pOff.y, uColor );
+            }
+        }
+        x += pGlyph->pDevOff.x;
+        y += pGlyph->pDevOff.y;
+    }
+}
+void Image::drawLine( int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint8_t uColor )
+{
+    if( x1 == x2 )
+    {
+        // Vertical line, easy
+        if( y2 < y1 )
+        {
+            int32_t r = y2;
+            y2 = y1;
+            y1 = r;
+        }
+        for( int j = y1; j <= y2; j++ )
+        {
+            set( x1, j, uColor );
+        }
+    }
+    else if( y1 == y2 )
+    {
+        // Horizontal line, easy
+        if( x2 < x1 )
+        {
+            int32_t r = x2;
+            x2 = x1;
+            x1 = r;
+        }
+        for( int j = x1; j <= x2; j++ )
+        {
+            set( j, y1, uColor );
+        }
+    }
+}

diff --git a/src/image.cpp b/src/image.cpp new file mode 100644 index 0000000..384de9a --- /dev/null +++ b/src/image.cpp
@@ -0,0 +1,143 @@
	1	#include "image.h"
	2	#include "palette.h"
	3	#include "font.h"
	4
	5	#include <stdlib.h>
	6	#include <string.h>
	7	#include <png.h>
	8
	9	Image::Image() :
	10	iWidth( 0 ),
	11	iHeight( 0 ),
	12	pPix( NULL )
	13	{
	14	}
	15
	16	Image::Image( int32_t iWidth, int32_t iHeight ) :
	17	iWidth( iWidth ),
	18	iHeight( iHeight ),
	19	pPix( NULL )
	20	{
	21	pPix = new uint8_t[iWidth*iHeight];
	22	clear();
	23	}
	24
	25	Image::~Image()
	26	{
	27	delete[] pPix;
	28	}
	29
	30	void Image::clear( uint8_t uColor )
	31	{
	32	memset( pPix, uColor, iWidth*iHeight );
	33	}
	34
	35	void Image::set( int32_t x, int32_t y, uint8_t iCol )
	36	{
	37	if( x < 0 \|\| y < 0 \|\| x >= iWidth \|\| y >= iHeight )
	38	return;
	39
	40	pPix[x+y*iWidth] = iCol;
	41	}
	42
	43	void Image::save( const char *sPath, class Palette &rPal )
	44	{
	45	uint8_t *pRows = new uint8_t[iHeight];
	46	for( int r = 0; r < iHeight; r++ )
	47	{
	48	pRows[r] = pPix+(iWidth*r);
	49	}
	50
	51	png_structp png_ptr = png_create_write_struct(
	52	PNG_LIBPNG_VER_STRING, NULL, NULL, NULL
	53	);
	54	png_infop info_ptr = png_create_info_struct(png_ptr);
	55	png_set_IHDR(png_ptr, info_ptr, iWidth, iHeight,
	56	8, PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
	57	PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT
	58	);
	59	png_color *pCol = new png_color[rPal.getCount()];
	60	for( int j = 0; j < rPal.getCount(); j++ )
	61	{
	62	uint8_t r, g, b;
	63	rPal.getColor( j, r, g, b );
	64	pCol[j].red = r;
	65	pCol[j].green = g;
	66	pCol[j].blue = b;
	67	}
	68	png_set_PLTE( png_ptr, info_ptr, pCol, rPal.getCount());
	69
	70	png_set_rows( png_ptr, info_ptr, pRows );
	71
	72	FILE *fp = fopen(sPath, "wb");
	73	if( fp == NULL )
	74	{
	75	printf("Error opening file!\n");
	76	exit( 1 );
	77	}
	78
	79	png_init_io( png_ptr, fp );
	80	png_write_png( png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL );
	81	png_destroy_write_struct( &png_ptr, &info_ptr );
	82	fclose( fp );
	83
	84	delete[] pCol;
	85	delete[] pRows;
	86	}
	87
	88	void Image::drawText( class Font &rFnt, int32_t x, int32_t y, uint8_t uColor,
	89	const char *sText )
	90	{
	91	for( const char s = sText; s; s++ )
	92	{
	93	Font::Glyph pGlyph = rFnt.get( s );
	94	if( pGlyph == NULL )
	95	continue;
	96
	97	for( int cy = 0; cy < pGlyph->pBox.y; cy++ )
	98	{
	99	for( int cx = 0; cx < pGlyph->pBox.x; cx++ )
	100	{
	101	int bit = 1<<(7-(cx%8));
	102	int byte = cx/8;
	103	if( pGlyph->pData[byte+cy*pGlyph->iRowBytes]&bit )
	104	set( x+cx, y+cy-pGlyph->pBox.y-pGlyph->pOff.y, uColor );
	105	}
	106	}
	107	x += pGlyph->pDevOff.x;
	108	y += pGlyph->pDevOff.y;
	109	}
	110	}
	111
	112	void Image::drawLine( int32_t x1, int32_t y1, int32_t x2, int32_t y2, uint8_t uColor )
	113	{
	114	if( x1 == x2 )
	115	{
	116	// Vertical line, easy
	117	if( y2 < y1 )
	118	{
	119	int32_t r = y2;
	120	y2 = y1;
	121	y1 = r;
	122	}
	123	for( int j = y1; j <= y2; j++ )
	124	{
	125	set( x1, j, uColor );
	126	}
	127	}
	128	else if( y1 == y2 )
	129	{
	130	// Horizontal line, easy
	131	if( x2 < x1 )
	132	{
	133	int32_t r = x2;
	134	x2 = x1;
	135	x1 = r;
	136	}
	137	for( int j = x1; j <= x2; j++ )
	138	{
	139	set( j, y1, uColor );
	140	}
	141	}
	142	}
	143