6502/erc-c
1
0
Fork 0
mirror of https://github.com/pevans/erc-c.git synced 2024-11-27 20:51:17 +00:00
Code Issues Projects Releases Wiki Activity

Use vm_area with bitfont_offset

Browse Source 
This should further standardize on vm_area.
This commit is contained in:
Peter Evans 2017-12-27 16:47:26 -06:00
parent efb8f04555
commit 27f91ec00f
3 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/vm_bitfont.h
View File

@ -18,6 +18,6 @@ typedef struct {
extern int vm_bitfont_render(vm_bitfont *, vm_screen *, vm_area *, char);
extern vm_bitfont *vm_bitfont_create(vm_screen *, const char *, int, int, char);
extern void vm_bitfont_free(vm_bitfont *);
extern void vm_bitfont_offset(vm_bitfont *, char, int *, int *);
extern void vm_bitfont_offset(vm_bitfont *, char, vm_area *);
#endif

27
src/vm_bitfont.c
View File

@ -67,13 +67,13 @@ vm_bitfont_free(vm_bitfont *font)
* value.
*/
void
vm_bitfont_offset(vm_bitfont *font, char ch, int *xcoord, int *ycoord)
vm_bitfont_offset(vm_bitfont *font, char ch, vm_area *area)
{
int row = (ch & 0xf0) >> 4;
int col = ch & 0x0f;
*xcoord = col * font->width;
*ycoord = row * font->height;
area->xoff = col * font->width;
area->yoff = row * font->height;
}
/*
@ -86,8 +86,7 @@ vm_bitfont_render(vm_bitfont *font,
vm_area *dest,
char ch)
{
SDL_Rect src_rect;
SDL_Rect dest_rect;
vm_area src;
// Our bitmap font may not be able to support all 256 possible
// values that a character can hold; the cmask will limit us to
@ -96,17 +95,19 @@ vm_bitfont_render(vm_bitfont *font,
// The width and height of the glyph are as indicated by the font
// struct
src_rect.w = font->width;
src_rect.h = font->height;
// Bring the destination attributes into the SDL_Rect we need to
// pass into SDL_RenderCopy().
SET_SDL_RECT(dest_rect, *dest);
src.width = font->width;
src.height = font->height;
// Get the spot in the bitmap where the glyph is found
vm_bitfont_offset(font, ch, &src_rect.x, &src_rect.y);
vm_bitfont_offset(font, ch, &src);
log_critical("src.x = %d, src.y = %d", src_rect.x, src_rect.y);
log_critical("src.xoff = %d, src.yoff = %d", src.xoff, src.yoff);
// Bring the destination attributes into the SDL_Rect we need to
// pass into SDL_RenderCopy(). Also bring in the src attributes
// we've built earlier.
MAKE_SDL_RECT(dest_rect, *dest);
MAKE_SDL_RECT(src_rect, src);
if (SDL_RenderCopy(screen->render, font->texture, &src_rect, &dest_rect) < 0) {
log_critical("Failed to render glyph: %s", SDL_GetError());

9
tests/vm_bitfont.c
View File

@ -40,13 +40,12 @@ Test(vm_bitfont, create)
Test(vm_bitfont, offset)
{
char ch = 'p';
int x = 0;
int y = 0;
vm_area area;
vm_bitfont_offset(font, ch, &x, &y);
vm_bitfont_offset(font, ch, &area);
cr_assert_eq(x, (ch & 0x0f) * font->width);
cr_assert_eq(y, (ch >> 4) * font->height);
cr_assert_eq(area.xoff, (ch & 0x0f) * font->width);
cr_assert_eq(area.yoff, (ch >> 4) * font->height);
}
/*