commit 314530f9686530999bdf7fe68f45e730b4a7bf63
Author: klewer-martin <martin.cachari@gmail.com>
Date: Tue, 19 Apr 2022 23:27:07 -0300
First commit; added main.c & Makefile
Diffstat:
| A | Makefile | | | 18 | ++++++++++++++++++ |
| A | main.c | | | 229 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 247 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -0,0 +1,18 @@
+CC := gcc
+CLIBS := `sdl2-config --libs` -lSDL2_ttf -lm
+CFLAGS := `sdl2-config --cflags` -Wall -Wshadow -pedantic -ansi -std=c99 -O3
+SRCS := $(wildcard *.c)
+OBJS := $(SRCS:.c=.o)
+
+TARGET := menu
+
+.PHONY: all clean
+
+$(TARGET): $(OBJS) $(HEADERS)
+ $(CC) $(CLIBS) $(CFLAGS) -o $@ $^
+
+%.o: %.c
+ $(CC) $(CLIBS) $(CFLAGS) -c $< -o $@
+
+clean:
+ rm -f $(OBJS)
diff --git a/main.c b/main.c
@@ -0,0 +1,229 @@
+#include <stdbool.h>
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_ttf.h>
+
+#define FONT_SIZE 12
+#define FONT_NAME "/home/mk/.local/share/fonts/VictorMono-Bold.ttf"
+#define FONT_COLOR 0xFFFCF9
+#define SHADOW_COLOR 0x000000
+
+#define BAR_H 14
+#define BAR_BORDER 2
+
+#define TOTAL_ENTRIES 6
+#define ELEMENTS_PADDING 3
+
+#define NORM_COLOR 0x010101FF
+#define SEL_COLOR 0xCC0000FF
+
+#define UNHEX(color) \
+ ((color) >> (8 * 3)) & 0xFF, \
+ ((color) >> (8 * 2)) & 0xFF, \
+ ((color) >> (8 * 1)) & 0xFF, \
+ ((color) >> (8 * 0)) & 0xFF
+
+
+typedef struct Entry {
+ char *text;
+ bool selected;
+ size_t index;
+} Entry;
+
+void next_selection(Entry entries[]) {
+ for(int i = 0; i < TOTAL_ENTRIES; i++) {
+ if(entries[i].selected == true) {
+ entries[i].selected = false;
+ if((i + 1) < TOTAL_ENTRIES)
+ entries[i + 1].selected = true;
+ else
+ entries[0].selected = true;
+
+ return;
+ }
+ }
+}
+
+void prev_selection(Entry entries[]) {
+ for(int i = 0; i < TOTAL_ENTRIES; i++) {
+ if(entries[i].selected == true) {
+ entries[i].selected = false;
+ if(i == 0) entries[TOTAL_ENTRIES - 1].selected = true;
+ else entries[i - 1].selected = true;
+
+ return;
+ }
+ }
+}
+
+int win_w, win_h;
+int text_w, text_h;
+TTF_Font *font;
+
+void draw_entry(SDL_Renderer *rend, Entry entry) {
+ SDL_Surface *text_surface;
+ SDL_Texture *text_texture;
+ SDL_Rect text_rect, text_container;
+ SDL_Color text_color, text_color_shadow;
+
+ text_color_shadow.r = (char)(SHADOW_COLOR >> 16) & 0xFF;
+ text_color_shadow.g = (char)(SHADOW_COLOR >> 8) & 0xFF;
+ text_color_shadow.b = (char)(SHADOW_COLOR) & 0xFF;
+
+ text_color.r = (char)(FONT_COLOR >> 16) & 0xFF;
+ text_color.g = (char)(FONT_COLOR >> 8) & 0xFF;
+ text_color.b = (char)(FONT_COLOR) & 0xFF;
+
+ text_container.x = BAR_BORDER;
+
+ text_container.y = (win_h / 2) - (((BAR_H * TOTAL_ENTRIES) + (ELEMENTS_PADDING * (TOTAL_ENTRIES - 1))) / 2) + BAR_H + (entry.index * (ELEMENTS_PADDING + BAR_H));
+
+ text_container.w = win_w - (BAR_BORDER * 2);
+ text_container.h = -BAR_H;
+
+ if(entry.selected)
+ SDL_SetRenderDrawColor(rend, UNHEX(SEL_COLOR)); /* RGBA */
+ else
+ SDL_SetRenderDrawColor(rend, UNHEX(NORM_COLOR)); /* RGBA */
+
+ SDL_RenderFillRect(rend, &text_container);
+
+ if(entry.selected) {
+ text_surface = TTF_RenderText_Blended(font, entry.text, text_color_shadow);
+ text_texture = SDL_CreateTextureFromSurface(rend, text_surface);
+
+ TTF_SizeText(font, entry.text, &text_w, &text_h);
+
+ text_rect.x = (win_w / 2) - (text_w / 2) + 1;
+ text_rect.y = (win_h / 2) - (((BAR_H * TOTAL_ENTRIES) + (ELEMENTS_PADDING * (TOTAL_ENTRIES - 1))) / 2) + BAR_H + (entry.index * (ELEMENTS_PADDING + BAR_H)) - (BAR_H + 1) + 1;
+ text_rect.w = text_surface->w;
+ text_rect.h = text_surface->h;
+
+ SDL_RenderCopy(rend, text_texture, NULL, &text_rect);
+ SDL_DestroyTexture(text_texture);
+ SDL_FreeSurface(text_surface);
+
+ text_surface = TTF_RenderText_Blended(font, entry.text, text_color);
+ text_texture = SDL_CreateTextureFromSurface(rend, text_surface);
+
+ TTF_SizeText(font, entry.text, &text_w, &text_h);
+
+ text_rect.x = (win_w / 2) - (text_w / 2);
+ text_rect.y = (win_h / 2) - (((BAR_H * TOTAL_ENTRIES) + (ELEMENTS_PADDING * (TOTAL_ENTRIES - 1))) / 2) + BAR_H + (entry.index * (ELEMENTS_PADDING + BAR_H)) - (BAR_H + 1);
+ text_rect.w = text_surface->w;
+ text_rect.h = text_surface->h;
+ }
+ else {
+ text_surface = TTF_RenderText_Blended(font, entry.text, text_color);
+ text_texture = SDL_CreateTextureFromSurface(rend, text_surface);
+
+ TTF_SizeText(font, entry.text, &text_w, &text_h);
+
+ text_rect.x = (win_w / 2) - (text_w / 2);
+ text_rect.y = (win_h / 2) - (((BAR_H * TOTAL_ENTRIES) + (ELEMENTS_PADDING * (TOTAL_ENTRIES - 1))) / 2) + BAR_H + (entry.index * (ELEMENTS_PADDING + BAR_H)) - (BAR_H + 1);
+ text_rect.w = text_surface->w;
+ text_rect.h = text_surface->h;
+ }
+ SDL_RenderCopy(rend, text_texture, NULL, &text_rect);
+ SDL_DestroyTexture(text_texture);
+ SDL_FreeSurface(text_surface);
+}
+
+
+int main (void) {
+ SDL_Window *win;
+ SDL_Renderer *rend;
+
+ SDL_Init(SDL_INIT_VIDEO);
+
+ win = SDL_CreateWindow(
+ "menu",
+ SDL_WINDOWPOS_CENTERED,
+ SDL_WINDOWPOS_CENTERED,
+ 800,
+ 600,
+ SDL_WINDOW_RESIZABLE
+ );
+
+ rend = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+
+ if (!win || !rend)
+ return 1;
+ else if(TTF_Init() == -1)
+ return 1;
+
+ font = TTF_OpenFont(FONT_NAME, FONT_SIZE);
+
+ bool run = true;
+ SDL_Event event;
+ win_w = 800;
+ win_h = 600;
+
+ Entry entries[TOTAL_ENTRIES] = {0};
+
+ for(int i = 0; i < TOTAL_ENTRIES; i++) {
+ entries[i].selected = false;
+ entries[i].index = i;
+ }
+
+ entries[0].text = "Bubble sort";
+ entries[1].text = "Bubble sort (improved)";
+ entries[2].text = "Insertion sort";
+ entries[3].text = "Merge sort";
+ entries[4].text = "Quick sort";
+ entries[5].text = "Shell sort";
+
+ entries[0].selected = true;
+ SDL_Keymod mod;
+ while(run) {
+ while(SDL_PollEvent(&event)) {
+ switch(event.type) {
+ case SDL_QUIT:
+ run = false;
+ break;
+ default: break;
+ case SDL_KEYDOWN:
+ /* printf("SDL_GetModState() == %X\n", SDL_GetModState()); */
+ switch(event.key.keysym.scancode) {
+ case SDL_SCANCODE_TAB:
+ mod = SDL_GetModState();
+ if((mod == KMOD_LSHIFT) || (mod == KMOD_RSHIFT)) {
+ prev_selection(entries);
+ break;
+ } else
+ next_selection(entries);
+ break;
+ default: break;
+ }
+ break;
+ case SDL_WINDOWEVENT:
+ switch(event.window.event) {
+ case SDL_WINDOWEVENT_RESIZED:
+ win_w = event.window.data1;
+ win_h = event.window.data2;
+ break;
+ default: break;
+ }
+ break;
+ }
+ }
+
+ SDL_SetRenderDrawColor(rend, 32, 32, 32, 0);
+ SDL_RenderClear(rend);
+
+ for(int i = 0; i < TOTAL_ENTRIES; i++)
+ draw_entry(rend, entries[i]);
+
+ SDL_RenderPresent(rend);
+ SDL_Delay(1);
+ }
+
+ TTF_CloseFont(font);
+
+ SDL_DestroyRenderer(rend);
+ SDL_DestroyWindow(win);
+
+ TTF_Quit();
+ SDL_Quit();
+ return 0;
+}
