Got it to compile with SDL2 and SDL_ttf

This commit is contained in:
Joseph Ferano 2023-11-11 14:38:47 +07:00
parent 59473a4958
commit 983440079a
2 changed files with 127 additions and 83 deletions

View File

@ -1,10 +1,11 @@
P=bt
CFLAGS=-g -Wall -Wextra -pedantic -O0
CC=gcc
CFLAGS=-g -Wall -Wextra -pedantic -O0
LDLIBS=-lSDL2 -lSDL2_ttf
RM=rm -vf
bt: clean
$(CC) $(CFLAGS) -lraylib $(P).c -o $(P)
$(CC) $(CFLAGS) $(LDLIBS) $(P).c -o $(P)
clean:
$(RM) $(P)

205
bt.c
View File

@ -7,7 +7,12 @@
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <raylib.h>
#include <stdbool.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_events.h>
#include <SDL2/SDL_ttf.h>
#include <SDL2/SDL_keycode.h>
typedef struct scrollback {
float height;
@ -40,22 +45,17 @@ void spawn(file_descriptors *fds) {
}
}
static float fontsize = 12;
Font *load_font(void) {
unsigned int file_size = 0;
char *font = "./fira.ttf";
unsigned char *fontdata = LoadFileData(font, &file_size);
Font *fontDefault = calloc(1, sizeof(Font));
fontDefault->baseSize = (int)fontsize;
fontDefault->glyphCount = 95;
fontDefault->glyphs = LoadFontData(fontdata, (int)file_size, 16, 0, 95, FONT_DEFAULT);
Image atlas = GenImageFontAtlas(fontDefault->glyphs, &fontDefault->recs, 95, 16, 4, 0);
fontDefault->texture = LoadTextureFromImage(atlas);
UnloadImage(atlas);
return fontDefault;
}
const int SCREEN_WIDTH = 900;
const int SCREEN_HEIGHT = 700;
const SDL_Color WHITE = {255, 255, 255, 255};
const SDL_Color BLACK = {0, 0, 0, 255};
const SDL_Color RED = {255, 0, 0, 255};
const SDL_Color GREEN = {0, 255, 0, 255};
const SDL_Color BLUE = {0, 0, 255, 255};
const SDL_Color YELLOW = {255, 255, 0, 255};
const SDL_Color MAGENTA = {255, 0, 255, 255};
const SDL_Color SKYBLUE = {0, 255, 255, 255};
const SDL_Color RAYWHITE = {200, 200, 200, 255};
int read_pty(file_descriptors *fds, scrollback *sb) {
ssize_t nread;
@ -90,10 +90,26 @@ int main(void) {
spawn(&fds);
const int screenWidth = 800;
const int screenHeight = 550;
if (SDL_Init(SDL_INIT_EVERYTHING) < 0) {
printf("error initializing SDL: %s\n", SDL_GetError());
return 1;
}
InitWindow(screenWidth, screenHeight, "basic term");
SDL_Window* window = SDL_CreateWindow( "bt",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
SCREEN_WIDTH,
SCREEN_HEIGHT,
SDL_WINDOW_SHOWN );
if (window == NULL) {
printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
return 1;
}
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
SDL_SetRenderDrawColor(renderer, 130, 163, 255, 1);
TTF_Font* font = TTF_OpenFont( "./fira.ttf", 16);
struct winsize sz;
int result = ioctl(fds.master, TIOCGWINSZ, &sz);
@ -101,9 +117,8 @@ int main(void) {
sz.ws_row = 120;
result = ioctl(fds.master, TIOCSWINSZ, &sz);
SetTargetFPS(60);
Font *fontDefault = load_font();
// TODO: It would be nice to figure out how to do this in SDL
// SetTargetFPS(60);
sb.capacity = 2048;
sb.buf = malloc(sb.capacity);
@ -123,68 +138,89 @@ int main(void) {
bool new_read = false;
bool new_char = false;
while (!WindowShouldClose()) {
float scroll_speed = 35.5f;
sb.ypos += GetMouseWheelMoveV().y * scroll_speed;
sb.height = MeasureTextEx(*fontDefault, sb.buf, fontsize, 1).y;
SDL_Event e;
bool quit = false;
while (quit == false) {
while (SDL_PollEvent( &e)) {
if (e.type == SDL_QUIT) {
quit = true;
} else if (e.type == SDL_KEYDOWN) {
if (new_read || new_char) {
if (sb.height - (float)abs((int)sb.ypos) + fontsize > (float)screenHeight) {
sb.ypos = -(sb.height - screenHeight) - fontsize;
}
char key = e.key.keysym.sym;
// TODO: Translate this all to SDL2
// int key = GetCharPressed();
while (key > 0) {
if ((key >= 32) && (key <= 125)) {
buf[buf_len] = (char)key;
buf[buf_len + 1] = '\0';
buf_len++;
sb.buf[sb.length] = (char)key;
sb.buf[sb.length + 1] = '\0';
sb.length++;
}
// TODO: Don't remember why I was doing this
// key = GetCharPressed();
// new_char = true;
}
if (key == SDLK_RETURN) {
sb.length -= buf_len;
sb.buf[sb.length] = '\0';
write(fds.master, buf, buf_len);
write(fds.master, "\r", 1);
buf[0] = '\0';
buf_len = 0;
new_char = true;
}
if (key == SDLK_BACKSPACE) {
if (buf_len > 0) {
buf_len--;
buf[buf_len] = '\0';
sb.length--;
sb.buf[sb.length] = '\0';
}
new_char = true;
}
}
float scroll_speed = 35.5f;
// TODO: We have to convert both these lines to SDL
// sb.ypos += GetMouseWheelMoveV().y * scroll_speed;
// sb.height = MeasureTextEx(*fontDefault, sb.buf, fontsize, 1).y;
SDL_Surface* surfaceMessage =
TTF_RenderText_Solid(font, "put your text here", WHITE);
// now you can convert it into a texture
SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surfaceMessage);
// TODO: This is probably related to the font height and scrolling up, we just need
// the "fontsize" which I think is probably the height of the text
if (new_read || new_char) {
// if (sb.height - (float)abs((int)sb.ypos) + fontsize > (float)SCREEN_HEIGHT) {
// sb.ypos = -(sb.height - SCREEN_HEIGHT) - fontsize;
// }
new_read = false;
new_char = false;
} else {
if (sb.ypos > 0) {
sb.ypos = 0;
} else if (abs((int)sb.ypos) > sb.height - fontsize) {
sb.ypos = -(sb.height - fontsize);
}
// if (sb.ypos > 0) {
// sb.ypos = 0;
// } else if (abs((int)sb.ypos) > sb.height - fontsize) {
// sb.ypos = -(sb.height - fontsize);
// }
}
int key = GetCharPressed();
while (key > 0) {
if ((key >= 32) && (key <= 125)) {
buf[buf_len] = (char)key;
buf[buf_len + 1] = '\0';
buf_len++;
sb.buf[sb.length] = (char)key;
sb.buf[sb.length + 1] = '\0';
sb.length++;
}
key = GetCharPressed();
new_char = true;
}
if (IsKeyPressed(KEY_ENTER)) {
sb.length -= buf_len;
sb.buf[sb.length] = '\0';
write(fds.master, buf, buf_len);
write(fds.master, "\r", 1);
buf[0] = '\0';
buf_len = 0;
new_char = true;
}
if (IsKeyPressed(KEY_BACKSPACE)) {
if (buf_len > 0) {
buf_len--;
buf[buf_len] = '\0';
sb.length--;
sb.buf[sb.length] = '\0';
}
new_char = true;
}
// Drawing
BeginDrawing();
{
int nread = read_pty(&fds, &sb);
if (nread > 0) {
sb.length += nread;
new_read = true;
}
ClearBackground(BLACK);
Color current_color = RAYWHITE;
SDL_RenderClear(renderer);
SDL_Color current_color = WHITE;
int col_max = 200;
char row_buf[col_max];
int nrow = 0;
@ -196,8 +232,9 @@ int main(void) {
continue;
} else if (sb.buf[c] == '\n' || sb.buf[c] == '\0' || ncol >= col_max) {
row_buf[ncol] = '\0';
Vector2 pos = { row_posx, nrow * row_height + sb.ypos };
DrawTextEx(*fontDefault, row_buf, pos, fontsize, 0, current_color);
// TODO: Render new line or something?
// Vector2 pos = { row_posx, nrow * row_height + sb.ypos };
// DrawTextEx(*fontDefault, row_buf, pos, fontsize, 0, current_color);
nrow++;
ncol = 0;
row_posx = 0;
@ -221,7 +258,7 @@ int main(void) {
continue;
}
csi_code = substr[0];
Color new_color = current_color;
SDL_Color new_color = WHITE;
switch (csi_code) {
case 'm':
for (int i = 0; i < nargs; i++) {
@ -242,13 +279,16 @@ int main(void) {
}
}
row_buf[ncol] = '\0';
Vector2 pos = { row_posx, nrow * row_height + sb.ypos };
DrawTextEx(*fontDefault, row_buf, pos, fontsize, 0, current_color);
// TODO: This looks like the actual place where we
// draw the text at a line
// Vector2 pos = { row_posx, nrow * row_height + sb.ypos };
// DrawTextEx(*fontDefault, row_buf, pos, fontsize, 0, current_color);
current_color = new_color;
ncol = 0;
c += (substr) - (sb.buf + c);
int width = MeasureTextEx(*fontDefault, row_buf, fontsize, 1).x;
row_posx += width + 0.85;
// TODO: Get the text height
// int width = MeasureTextEx(*fontDefault, row_buf, fontsize, 1).x;
// row_posx += width + 0.85;
break;
}
break;
@ -259,10 +299,13 @@ int main(void) {
}
}
}
EndDrawing();
}
free(sb.buf);
close(fds.master);
CloseWindow();
// TODO: Figure out when to free this thing
// SDL_FreeSurface(texture);
TTF_CloseFont(font);
TTF_Quit();
SDL_Quit();
}