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Sync login framebuffer code to libui.

This commit is contained in:
Jonas 'Sortie' Termansen 2024-06-22 08:45:26 +00:00
parent eede0df814
commit 2bc6e40f1d
2 changed files with 123 additions and 4 deletions
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106
libui/framebuffer.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, 2015, 2016 Jonas 'Sortie' Termansen.
* Copyright (c) 2014, 2015 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -14,14 +14,17 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* framebuffer.c
* Framebuffer functions.
* Framebuffer utilities.
*/
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "framebuffer.h"
#include "pixel.h"
#include "vgafont.h"
struct framebuffer framebuffer_crop(struct framebuffer fb,
size_t left,
@ -69,3 +72,102 @@ void framebuffer_copy_to_framebuffer_blend(const struct framebuffer dst,
}
}
}
struct framebuffer framebuffer_crop_int(struct framebuffer fb,
int left,
int top,
int width,
int height)
{
if ( left < 0 ) { width -= -left; left = 0; }
if ( top < 0 ) { top -= -height; top -= 0; }
if ( width < 0 ) { width = 0; }
if ( height < 0 ) { height = 0; }
return framebuffer_crop(fb, left, top, width, height);
}
struct framebuffer framebuffer_cut_left_x(struct framebuffer fb, int offset)
{
fb = framebuffer_crop_int(fb, offset, 0, fb.xres - offset, fb.yres);
return fb;
}
struct framebuffer framebuffer_cut_right_x(struct framebuffer fb, int offset)
{
fb = framebuffer_crop_int(fb, 0, 0, fb.xres - offset, fb.yres);
return fb;
}
struct framebuffer framebuffer_cut_top_y(struct framebuffer fb, int offset)
{
fb = framebuffer_crop_int(fb, 0, offset, fb.xres, fb.yres - offset);
return fb;
}
struct framebuffer framebuffer_cut_bottom_y(struct framebuffer fb, int offset)
{
fb = framebuffer_crop_int(fb, 0, 0, fb.xres, fb.yres - offset);
return fb;
}
struct framebuffer framebuffer_center_x(struct framebuffer fb, int x, int width)
{
x = x - width / 2;
if ( x < 0 ) { width -= -x; x = 0; }
if ( width < 0 ) { width = 0; }
fb = framebuffer_crop(fb, x, 0, width, fb.yres);
return fb;
}
struct framebuffer framebuffer_center_y(struct framebuffer fb, int y, int height)
{
y = y - height / 2;
if ( y < 0 ) { height -= -y; y = 0; }
if ( height < 0 ) { height = 0; }
fb = framebuffer_crop(fb, 0, y, fb.xres, height);
return fb;
}
struct framebuffer framebuffer_right_x(struct framebuffer fb, int x, int width)
{
x = x - width;
if ( x < 0 ) { width -= -x; x = 0; }
if ( width < 0 ) { width = 0; }
fb = framebuffer_crop(fb, x, 0, width, fb.yres);
return fb;
}
struct framebuffer framebuffer_bottom_y(struct framebuffer fb, int y, int height)
{
y = y - height;
if ( y < 0 ) { height -= -y; y = 0; }
if ( height < 0 ) { height = 0; }
fb = framebuffer_crop(fb, 0, y, fb.xres, height);
return fb;
}
struct framebuffer framebuffer_center_text_x(struct framebuffer fb, int x, const char* str)
{
int width = (FONT_WIDTH + 1) * strlen(str);
return framebuffer_center_x(fb, x, width);
}
struct framebuffer framebuffer_center_text_y(struct framebuffer fb, int y, const char* str)
{
(void) str;
int height = FONT_HEIGHT;
return framebuffer_center_y(fb, y, height);
}
struct framebuffer framebuffer_right_text_x(struct framebuffer fb, int x, const char* str)
{
int width = (FONT_WIDTH + 1) * strlen(str);
return framebuffer_right_x(fb, x, width);
}
struct framebuffer framebuffer_bottom_text_y(struct framebuffer fb, int y, const char* str)
{
(void) str;
int height = FONT_HEIGHT;
return framebuffer_bottom_y(fb, y, height);
}

21
libui/include/framebuffer.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, 2015, 2016 Jonas 'Sortie' Termansen.
* Copyright (c) 2014, 2015 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -14,7 +14,7 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* framebuffer.h
* Framebuffer functions.
* Framebuffer utilities.
*/
#ifndef FRAMEBUFFER_H
@ -59,5 +59,22 @@ void framebuffer_copy_to_framebuffer(const struct framebuffer dst,
const struct framebuffer src);
void framebuffer_copy_to_framebuffer_blend(const struct framebuffer dst,
const struct framebuffer src);
struct framebuffer framebuffer_crop_int(struct framebuffer fb,
int left,
int top,
int width,
int height);
struct framebuffer framebuffer_cut_left_x(struct framebuffer fb, int offset);
struct framebuffer framebuffer_cut_right_x(struct framebuffer fb, int offset);
struct framebuffer framebuffer_cut_top_y(struct framebuffer fb, int offset);
struct framebuffer framebuffer_cut_bottom_y(struct framebuffer fb, int offset);
struct framebuffer framebuffer_center_x(struct framebuffer fb, int x, int width);
struct framebuffer framebuffer_center_y(struct framebuffer fb, int y, int height);
struct framebuffer framebuffer_right_x(struct framebuffer fb, int x, int width);
struct framebuffer framebuffer_bottom_y(struct framebuffer fb, int y, int height);
struct framebuffer framebuffer_center_text_x(struct framebuffer fb, int x, const char* str);
struct framebuffer framebuffer_center_text_y(struct framebuffer fb, int y, const char* str);
struct framebuffer framebuffer_right_text_x(struct framebuffer fb, int x, const char* str);
struct framebuffer framebuffer_bottom_text_y(struct framebuffer fb, int y, const char* str);
#endif