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gterm: rename vga_font_{width,height} to lowercase

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Now that the values are editable, this is the correct letter case.
However this deserves its own commit so the commit with the logical
change is easier to read.
This commit is contained in:
Hannu Hartikainen 2021-08-18 15:07:44 +03:00
parent a8a8af4c5f
commit c11dc2388d
1 changed files with 38 additions and 38 deletions
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76
stage23/lib/gterm.c
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@ -10,8 +10,8 @@
#include <lib/fb.h>
#include <mm/pmm.h>
static size_t VGA_FONT_WIDTH = 8;
static size_t VGA_FONT_HEIGHT = 16;
static size_t vga_font_width = 8;
static size_t vga_font_height = 16;
#define VGA_FONT_GLYPHS 256
// Maximum allowed font size in bytes. 16kB should be enough as 9x32 is the
@ -106,16 +106,16 @@ static uint32_t blend_gradient_from_box(size_t x, size_t y, uint32_t bg_px, uint
if (x < frame_width)
x_distance = frame_width - x;
else
x_distance = x - (frame_width + VGA_FONT_WIDTH * cols);
x_distance = x - (frame_width + vga_font_width * cols);
if (y < frame_height)
y_distance = frame_height - y;
else
y_distance = y - (frame_height + VGA_FONT_HEIGHT * rows);
y_distance = y - (frame_height + vga_font_height * rows);
if (x >= frame_width && x < frame_width + VGA_FONT_WIDTH * cols) {
if (x >= frame_width && x < frame_width + vga_font_width * cols) {
distance = y_distance;
} else if (y >= frame_height && y < frame_height + VGA_FONT_HEIGHT * rows) {
} else if (y >= frame_height && y < frame_height + vga_font_height * rows) {
distance = x_distance;
} else {
distance = sqrt((uint64_t)x_distance * (uint64_t)x_distance
@ -208,7 +208,7 @@ static void loop_internal(size_t xstart, size_t xend, size_t ystart, size_t yend
void gterm_generate_canvas(void) {
if (background) {
const size_t frame_height_end = frame_height + VGA_FONT_HEIGHT * rows, frame_width_end = frame_width + VGA_FONT_WIDTH * cols;
const size_t frame_height_end = frame_height + vga_font_height * rows, frame_width_end = frame_width + vga_font_width * cols;
const size_t fheight = frame_height - margin_gradient, fheight_end = frame_height_end + margin_gradient,
fwidth = frame_width - margin_gradient, fwidth_end = frame_width_end + margin_gradient;
@ -242,28 +242,28 @@ struct gterm_char {
};
void gterm_plot_char(struct gterm_char *c, size_t x, size_t y) {
bool *glyph = &vga_font_bool[c->c * VGA_FONT_HEIGHT * VGA_FONT_WIDTH];
for (size_t i = 0; i < VGA_FONT_HEIGHT; i++) {
bool *glyph = &vga_font_bool[c->c * vga_font_height * vga_font_width];
for (size_t i = 0; i < vga_font_height; i++) {
uint32_t *fb_line = gterm_framebuffer + x + (y + i) * (gterm_pitch / 4);
uint32_t *canvas_line = bg_canvas + x + (y + i) * gterm_width;
for (size_t j = 0; j < VGA_FONT_WIDTH; j++) {
for (size_t j = 0; j < vga_font_width; j++) {
uint32_t bg = c->bg == 0xffffffff ? canvas_line[j] : c->bg;
bool draw = glyph[i * VGA_FONT_WIDTH + j];
bool draw = glyph[i * vga_font_width + j];
fb_line[j] = draw ? c->fg : bg;
}
}
}
void gterm_plot_char_fast(struct gterm_char *old, struct gterm_char *c, size_t x, size_t y) {
bool *new_glyph = &vga_font_bool[c->c * VGA_FONT_HEIGHT * VGA_FONT_WIDTH];
bool *old_glyph = &vga_font_bool[old->c * VGA_FONT_HEIGHT * VGA_FONT_WIDTH];
for (size_t i = 0; i < VGA_FONT_HEIGHT; i++) {
bool *new_glyph = &vga_font_bool[c->c * vga_font_height * vga_font_width];
bool *old_glyph = &vga_font_bool[old->c * vga_font_height * vga_font_width];
for (size_t i = 0; i < vga_font_height; i++) {
uint32_t *fb_line = gterm_framebuffer + x + (y + i) * (gterm_pitch / 4);
uint32_t *canvas_line = bg_canvas + x + (y + i) * gterm_width;
for (size_t j = 0; j < VGA_FONT_WIDTH; j++) {
for (size_t j = 0; j < vga_font_width; j++) {
uint32_t bg = c->bg == 0xffffffff ? canvas_line[j] : c->bg;
bool old_draw = old_glyph[i * VGA_FONT_WIDTH + j];
bool new_draw = new_glyph[i * VGA_FONT_WIDTH + j];
bool old_draw = old_glyph[i * vga_font_width + j];
bool new_draw = new_glyph[i * vga_font_width + j];
if (old_draw == new_draw)
continue;
fb_line[j] = new_draw ? c->fg : bg;
@ -272,7 +272,7 @@ void gterm_plot_char_fast(struct gterm_char *old, struct gterm_char *c, size_t x
}
static void plot_char_grid_force(struct gterm_char *c, size_t x, size_t y) {
gterm_plot_char(c, frame_width + x * VGA_FONT_WIDTH, frame_height + y * VGA_FONT_HEIGHT);
gterm_plot_char(c, frame_width + x * vga_font_width, frame_height + y * vga_font_height);
}
static void plot_char_grid(struct gterm_char *c, size_t x, size_t y) {
@ -281,9 +281,9 @@ static void plot_char_grid(struct gterm_char *c, size_t x, size_t y) {
if (old->c != c->c || old->fg != c->fg || old->bg != c->bg) {
if (old->fg == c->fg && old->bg == c->bg) {
gterm_plot_char_fast(old, c, frame_width + x * VGA_FONT_WIDTH, frame_height + y * VGA_FONT_HEIGHT);
gterm_plot_char_fast(old, c, frame_width + x * vga_font_width, frame_height + y * vga_font_height);
} else {
gterm_plot_char(c, frame_width + x * VGA_FONT_WIDTH, frame_height + y * VGA_FONT_HEIGHT);
gterm_plot_char(c, frame_width + x * vga_font_width, frame_height + y * vga_font_height);
}
}
}
@ -403,8 +403,8 @@ void gterm_move_character(size_t new_x, size_t new_y, size_t old_x, size_t old_y
if (!double_buffer_enabled) {
gterm_plot_char(&grid[old_x + old_y * cols],
frame_width + new_x * VGA_FONT_WIDTH,
frame_height + new_y * VGA_FONT_HEIGHT);
frame_width + new_x * vga_font_width,
frame_height + new_y * vga_font_height);
}
grid[new_x + new_y * cols] = grid[old_x + old_y * cols];
}
@ -443,8 +443,8 @@ void gterm_double_buffer_flush(void) {
size_t x = i % cols;
size_t y = i / cols;
gterm_plot_char(&grid[i], x * VGA_FONT_WIDTH + frame_width,
y * VGA_FONT_HEIGHT + frame_height);
gterm_plot_char(&grid[i], x * vga_font_width + frame_width,
y * vga_font_height + frame_height);
}
draw_cursor();
@ -644,7 +644,7 @@ bool gterm_init(size_t *_rows, size_t *_cols, size_t width, size_t height) {
gterm_bpp = fbinfo.framebuffer_bpp;
gterm_pitch = fbinfo.framebuffer_pitch;
size_t font_width = VGA_FONT_WIDTH, font_height = VGA_FONT_HEIGHT;
size_t font_width = vga_font_width, font_height = vga_font_height;
char *menu_font_size = config_get_value(NULL, 0, "MENU_FONT_SIZE");
if (menu_font_size != NULL)
@ -674,26 +674,26 @@ bool gterm_init(size_t *_rows, size_t *_cols, size_t width, size_t height) {
print("menu: Could not open font file.\n");
} else {
if (fread(&f, vga_font_bits, 0, font_bytes) == 0) {
VGA_FONT_WIDTH = font_width;
VGA_FONT_HEIGHT = font_height;
vga_font_width = font_width;
vga_font_height = font_height;
}
}
}
// if not loaded (stage2) or custom font (stage3), load font
if (vga_font_bool == NULL || menu_font != NULL) {
vga_font_bool = ext_mem_alloc(VGA_FONT_GLYPHS * VGA_FONT_HEIGHT * VGA_FONT_WIDTH * sizeof(bool));
vga_font_bool = ext_mem_alloc(VGA_FONT_GLYPHS * vga_font_height * vga_font_width * sizeof(bool));
for (size_t i = 0; i < VGA_FONT_GLYPHS; i++) {
uint8_t *glyph = &vga_font_bits[i * VGA_FONT_HEIGHT];
uint8_t *glyph = &vga_font_bits[i * vga_font_height];
for (size_t y = 0; y < VGA_FONT_HEIGHT; y++) {
for (size_t y = 0; y < vga_font_height; y++) {
// NOTE: the characters in VGA fonts are always at most
// one byte wide. 9 dot wide fonts have 8 dots and one
// empty column, except characters 0xC0-0xDF replicate
// column 9 in Line Graphics Mode. (TODO: implement that)
for (size_t x = 0; x < VGA_FONT_WIDTH; x++) {
size_t offset = i * VGA_FONT_HEIGHT * VGA_FONT_WIDTH + y * VGA_FONT_WIDTH + x;
for (size_t x = 0; x < vga_font_width; x++) {
size_t offset = i * vga_font_height * vga_font_width + y * vga_font_width + x;
if ((glyph[y] & (0x80 >> x))) {
vga_font_bool[offset] = true;
@ -705,8 +705,8 @@ bool gterm_init(size_t *_rows, size_t *_cols, size_t width, size_t height) {
}
}
*_cols = cols = (gterm_width - margin * 2) / VGA_FONT_WIDTH;
*_rows = rows = (gterm_height - margin * 2) / VGA_FONT_HEIGHT;
*_cols = cols = (gterm_width - margin * 2) / vga_font_width;
*_rows = rows = (gterm_height - margin * 2) / vga_font_height;
size_t new_grid_size = rows * cols * sizeof(struct gterm_char);
if (new_grid_size > last_grid_size) {
@ -720,8 +720,8 @@ bool gterm_init(size_t *_rows, size_t *_cols, size_t width, size_t height) {
last_front_grid_size = new_front_grid_size;
}
frame_height = gterm_height / 2 - (VGA_FONT_HEIGHT * rows) / 2;
frame_width = gterm_width / 2 - (VGA_FONT_WIDTH * cols) / 2;
frame_height = gterm_height / 2 - (vga_font_height * rows) / 2;
frame_width = gterm_width / 2 - (vga_font_width * cols) / 2;
size_t new_bg_canvas_size = gterm_width * gterm_height * sizeof(uint32_t);
if (new_bg_canvas_size > last_bg_canvas_size) {
@ -775,8 +775,8 @@ void gterm_full_refresh(void) {
size_t x = i % cols;
size_t y = i / cols;
gterm_plot_char(&grid[i], x * VGA_FONT_WIDTH + frame_width,
y * VGA_FONT_HEIGHT + frame_height);
gterm_plot_char(&grid[i], x * vga_font_width + frame_width,
y * vga_font_height + frame_height);
}
draw_cursor();