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Split the display & update function in two, and added invertpixel(), invertline() and invertrect().

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5916 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-02-11 19:35:50 +00:00
parent 707cb7bc04
commit b66f94b03d
2 changed files with 57 additions and 7 deletions
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60
apps/plugins/lib/playergfx.c
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@ -29,9 +29,15 @@ static struct plugin_api *pgfx_rb = NULL; /* global api struct pointer */
static int char_width;
static int char_height;
static int pixel_height;
static int pixel_width;
static unsigned char gfx_chars[8];
static unsigned char gfx_buffer[56];
/* Private function declarations */
static void linefunc(int x1, int y1, int x2, int y2,
void (*pixelfunc)(int x, int y));
/* Implementation */
bool pgfx_init(struct plugin_api* newrb, int cwidth, int cheight)
{
@ -44,7 +50,8 @@ bool pgfx_init(struct plugin_api* newrb, int cwidth, int cheight)
char_width = cwidth;
char_height = cheight;
pixel_height = 7 * char_height;
pixel_width = 5 * char_width;
for (i = 0; i < cwidth * cheight; i++)
{
if ((gfx_chars[i] = pgfx_rb->lcd_get_locked_pattern()) == 0)
@ -69,16 +76,20 @@ void pgfx_release(void)
void pgfx_display(int cx, int cy)
{
int i, j;
for (i = 0; i < char_width * char_height; i++)
pgfx_rb->lcd_define_pattern(gfx_chars[i], gfx_buffer + 7 * i);
for (i = 0; i < char_width; i++)
for (j = 0; j < char_height; j++)
pgfx_rb->lcd_putc(cx + i, cy + j, gfx_chars[char_height * i + j]);
}
void pgfx_update(void)
{
int i;
for (i = 0; i < char_width * char_height; i++)
pgfx_rb->lcd_define_pattern(gfx_chars[i], gfx_buffer + 7 * i);
}
void pgfx_clear_display(void)
{
pgfx_rb->memset(gfx_buffer, 0, char_width * pixel_height);
@ -89,7 +100,13 @@ void pgfx_drawpixel(int x, int y)
gfx_buffer[pixel_height * (x/5) + y] |= 0x10 >> (x%5);
}
void pgfx_drawline(int x1, int y1, int x2, int y2)
void pgfx_invertpixel(int x, int y)
{
gfx_buffer[pixel_height * (x/5) + y] ^= 0x10 >> (x%5);
}
static void linefunc(int x1, int y1, int x2, int y2,
void (*pixelfunc)(int x, int y))
{
int numpixels;
int i;
@ -140,7 +157,7 @@ void pgfx_drawline(int x1, int y1, int x2, int y2)
for (i = 0; i < numpixels; i++)
{
pgfx_drawpixel(x, y);
pixelfunc(x, y);
if (d < 0)
{
@ -157,4 +174,33 @@ void pgfx_drawline(int x1, int y1, int x2, int y2)
}
}
void pgfx_drawline(int x1, int y1, int x2, int y2)
{
linefunc(x1, y1, x2, y2, pgfx_drawpixel);
}
void pgfx_invertline(int x1, int y1, int x2, int y2)
{
linefunc(x1, y1, x2, y2, pgfx_invertpixel);
}
void pgfx_invertrect (int x, int y, int nx, int ny)
{
int i, j;
if (x > pixel_width)
return;
if (y > pixel_height)
return;
if (x + nx > pixel_width)
nx = pixel_width - x;
if (y + ny > pixel_height)
ny = pixel_height - y;
for (i = 0; i < nx; i++)
for (j = 0; j < ny; j++)
pgfx_invertpixel(x + i, y + j);
}
#endif /* HAVE_LCD_CHARCELLS */