ref: 808b46f8716eca8d8501ab3f158b4e0af6d8c1a2
dir: /demo/main.c/
#include <SDL2/SDL.h>
#include <stdio.h>
#include "renderer.h"
#include "microui.h"
static char logbuf[64000];
static int logbuf_updated = 0;
static float bg[3] = { 90, 95, 100 };
static void write_log(const char *text) {
if (logbuf[0]) { strcat(logbuf, "\n"); }
strcat(logbuf, text);
logbuf_updated = 1;
}
static void test_window(mu_Context *ctx) {
static mu_Container window;
/* init window manually so we can set its position and size */
if (!window.inited) {
mu_init_window(ctx, &window, 0);
window.rect = mu_rect(40, 40, 300, 450);
}
/* limit window to minimum size */
window.rect.w = mu_max(window.rect.w, 240);
window.rect.h = mu_max(window.rect.h, 300);
/* do window */
if (mu_begin_window(ctx, &window, "Demo Window")) {
/* window info */
static int show_info = 0;
if (mu_header(ctx, &show_info, "Window Info")) {
char buf[64];
mu_layout_row(ctx, 2, (int[]) { 54, -1 }, 0);
mu_label(ctx,"Position:");
sprintf(buf, "%d, %d", window.rect.x, window.rect.y); mu_label(ctx, buf);
mu_label(ctx, "Size:");
sprintf(buf, "%d, %d", window.rect.w, window.rect.h); mu_label(ctx, buf);
}
/* labels + buttons */
static int show_buttons = 1;
if (mu_header(ctx, &show_buttons, "Test Buttons")) {
mu_layout_row(ctx, 3, (int[]) { 86, -110, -1 }, 0);
mu_label(ctx, "Test buttons 1:");
if (mu_button(ctx, "Button 1")) { write_log("Pressed button 1"); }
if (mu_button(ctx, "Button 2")) { write_log("Pressed button 2"); }
mu_label(ctx, "Test buttons 2:");
if (mu_button(ctx, "Button 3")) { write_log("Pressed button 3"); }
if (mu_button(ctx, "Button 4")) { write_log("Pressed button 4"); }
}
/* tree */
static int show_tree = 1;
if (mu_header(ctx, &show_tree, "Tree and Text")) {
mu_layout_row(ctx, 2, (int[]) { 140, -1 }, 0);
mu_layout_begin_column(ctx);
static int states[8];
if (mu_begin_treenode(ctx, &states[0], "Test 1")) {
if (mu_begin_treenode(ctx, &states[1], "Test 1a")) {
mu_label(ctx, "Hello");
mu_label(ctx, "world");
mu_end_treenode(ctx);
}
if (mu_begin_treenode(ctx, &states[2], "Test 1b")) {
if (mu_button(ctx, "Button 1")) { write_log("Pressed button 1"); }
if (mu_button(ctx, "Button 2")) { write_log("Pressed button 2"); }
mu_end_treenode(ctx);
}
mu_end_treenode(ctx);
}
if (mu_begin_treenode(ctx, &states[3], "Test 2")) {
mu_layout_row(ctx, 2, (int[]) { 54, 54 }, 0);
if (mu_button(ctx, "Button 3")) { write_log("Pressed button 3"); }
if (mu_button(ctx, "Button 4")) { write_log("Pressed button 4"); }
if (mu_button(ctx, "Button 5")) { write_log("Pressed button 5"); }
if (mu_button(ctx, "Button 6")) { write_log("Pressed button 6"); }
mu_end_treenode(ctx);
}
if (mu_begin_treenode(ctx, &states[4], "Test 3")) {
static int checks[3] = { 1, 0, 1 };
mu_checkbox(ctx, &checks[0], "Checkbox 1");
mu_checkbox(ctx, &checks[1], "Checkbox 2");
mu_checkbox(ctx, &checks[2], "Checkbox 3");
mu_end_treenode(ctx);
}
mu_layout_end_column(ctx);
mu_layout_begin_column(ctx);
mu_layout_row(ctx, 1, (int[]) { -1 }, 0);
mu_text(ctx, "Lorem ipsum dolor sit amet, consectetur adipiscing "
"elit. Maecenas lacinia, sem eu lacinia molestie, mi risus faucibus "
"ipsum, eu varius magna felis a nulla.");
mu_layout_end_column(ctx);
}
/* background color sliders */
static int show_sliders = 1;
if (mu_header(ctx, &show_sliders, "Background Color")) {
mu_layout_row(ctx, 2, (int[]) { -78, -1 }, 74);
/* sliders */
mu_layout_begin_column(ctx);
mu_layout_row(ctx, 2, (int[]) { 46, -1 }, 0);
mu_label(ctx, "Red:"); mu_slider(ctx, &bg[0], 0, 255);
mu_label(ctx, "Green:"); mu_slider(ctx, &bg[1], 0, 255);
mu_label(ctx, "Blue:"); mu_slider(ctx, &bg[2], 0, 255);
mu_layout_end_column(ctx);
/* color preview */
mu_Rect r = mu_layout_next(ctx);
mu_draw_rect(ctx, r, mu_color(bg[0], bg[1], bg[2], 255));
char buf[32];
sprintf(buf, "#%02X%02X%02X", (int) bg[0], (int) bg[1], (int) bg[2]);
mu_draw_control_text(ctx, buf, r, MU_COLOR_TEXT, MU_OPT_ALIGNCENTER);
}
mu_end_window(ctx);
}
}
static void log_window(mu_Context *ctx) {
static mu_Container window;
/* init window manually so we can set its position and size */
if (!window.inited) {
mu_init_window(ctx, &window, 0);
window.rect = mu_rect(350, 40, 300, 200);
}
if (mu_begin_window(ctx, &window, "Log Window")) {
/* output text panel */
static mu_Container panel;
mu_layout_row(ctx, 1, (int[]) { -1 }, -28);
mu_begin_panel(ctx, &panel);
mu_layout_row(ctx, 1, (int[]) { -1 }, -1);
mu_text(ctx, logbuf);
mu_end_panel(ctx);
if (logbuf_updated) {
panel.scroll.y = panel.content_size.y;
logbuf_updated = 0;
}
/* input textbox + submit button */
static char buf[128];
int submitted = 0;
mu_layout_row(ctx, 2, (int[]) { -70, -1 }, 0);
if (mu_textbox(ctx, buf, sizeof(buf)) & MU_RES_SUBMIT) {
mu_set_focus(ctx, ctx->last_id);
submitted = 1;
}
if (mu_button(ctx, "Submit")) { submitted = 1; }
if (submitted) {
write_log(buf);
buf[0] = '\0';
}
mu_end_window(ctx);
}
}
static int uint8_slider(mu_Context *ctx, unsigned char *value, int low, int high) {
static float tmp;
mu_push_id(ctx, &value, sizeof(value));
tmp = *value;
int res = mu_slider_ex(ctx, &tmp, low, high, 0, "%.0f", MU_OPT_ALIGNCENTER);
*value = tmp;
mu_pop_id(ctx);
return res;
}
static void style_window(mu_Context *ctx) {
static mu_Container window;
/* init window manually so we can set its position and size */
if (!window.inited) {
mu_init_window(ctx, &window, 0);
window.rect = mu_rect(350, 250, 300, 240);
}
static struct { const char *label; int idx; } colors[] = {
{ "text:", MU_COLOR_TEXT },
{ "border:", MU_COLOR_BORDER },
{ "windowbg:", MU_COLOR_WINDOWBG },
{ "titlebg:", MU_COLOR_TITLEBG },
{ "titletext:", MU_COLOR_TITLETEXT },
{ "panelbg:", MU_COLOR_PANELBG },
{ "button:", MU_COLOR_BUTTON },
{ "buttonhover:", MU_COLOR_BUTTONHOVER },
{ "buttonfocus:", MU_COLOR_BUTTONFOCUS },
{ "base:", MU_COLOR_BASE },
{ "basehover:", MU_COLOR_BASEHOVER },
{ "basefocus:", MU_COLOR_BASEFOCUS },
{ "scrollbase:", MU_COLOR_SCROLLBASE },
{ "scrollthumb:", MU_COLOR_SCROLLTHUMB },
{ NULL }
};
if (mu_begin_window(ctx, &window, "Style Editor")) {
int sw = mu_get_container(ctx)->body.w * 0.14;
mu_layout_row(ctx, 6, (int[]) { 80, sw, sw, sw, sw, -1 }, 0);
for (int i = 0; colors[i].label; i++) {
mu_label(ctx, colors[i].label);
uint8_slider(ctx, &ctx->style->colors[i].r, 0, 255);
uint8_slider(ctx, &ctx->style->colors[i].g, 0, 255);
uint8_slider(ctx, &ctx->style->colors[i].b, 0, 255);
uint8_slider(ctx, &ctx->style->colors[i].a, 0, 255);
mu_draw_rect(ctx, mu_layout_next(ctx), ctx->style->colors[i]);
}
mu_end_window(ctx);
}
}
static void process_frame(mu_Context *ctx) {
mu_begin(ctx);
test_window(ctx);
log_window(ctx);
style_window(ctx);
mu_end(ctx);
}
static const char button_map[256] = {
[ SDL_BUTTON_LEFT & 0xff ] = MU_MOUSE_LEFT,
[ SDL_BUTTON_RIGHT & 0xff ] = MU_MOUSE_RIGHT,
[ SDL_BUTTON_MIDDLE & 0xff ] = MU_MOUSE_MIDDLE,
};
static const char key_map[256] = {
[ SDLK_LSHIFT & 0xff ] = MU_KEY_SHIFT,
[ SDLK_RSHIFT & 0xff ] = MU_KEY_SHIFT,
[ SDLK_LCTRL & 0xff ] = MU_KEY_CTRL,
[ SDLK_RCTRL & 0xff ] = MU_KEY_CTRL,
[ SDLK_LALT & 0xff ] = MU_KEY_ALT,
[ SDLK_RALT & 0xff ] = MU_KEY_ALT,
[ SDLK_RETURN & 0xff ] = MU_KEY_RETURN,
[ SDLK_BACKSPACE & 0xff ] = MU_KEY_BACKSPACE,
};
static int text_width(mu_Font font, const char *text, int len) {
if (len == -1) { len = strlen(text); }
return r_get_text_width(text, len);
}
static int text_height(mu_Font font) {
return r_get_text_height();
}
int main(int argc, char **argv) {
/* init SDL and renderer */
SDL_Init(SDL_INIT_EVERYTHING);
r_init();
/* init microui */
mu_Context *ctx = malloc(sizeof(mu_Context));
mu_init(ctx);
ctx->text_width = text_width;
ctx->text_height = text_height;
/* main loop */
for (;;) {
/* handle SDL events */
SDL_Event e;
while (SDL_PollEvent(&e)) {
switch (e.type) {
case SDL_QUIT: exit(EXIT_SUCCESS); break;
case SDL_MOUSEMOTION: mu_input_mousemove(ctx, e.motion.x, e.motion.y); break;
case SDL_MOUSEWHEEL: mu_input_scroll(ctx, 0, e.wheel.y * -30); break;
case SDL_TEXTINPUT: mu_input_text(ctx, e.text.text); break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP: {
int b = button_map[e.button.button & 0xff];
if (b && e.type == SDL_MOUSEBUTTONDOWN) { mu_input_mousedown(ctx, e.button.x, e.button.y, b); }
if (b && e.type == SDL_MOUSEBUTTONUP) { mu_input_mouseup(ctx, e.button.x, e.button.y, b); }
}
case SDL_KEYDOWN:
case SDL_KEYUP: {
int c = key_map[e.key.keysym.sym & 0xff];
if (c && e.type == SDL_KEYDOWN) { mu_input_keydown(ctx, c); }
if (c && e.type == SDL_KEYUP) { mu_input_keyup(ctx, c); }
break;
}
}
}
/* process frame */
process_frame(ctx);
/* render */
r_clear(mu_color(bg[0], bg[1], bg[2], 255));
mu_Command *cmd = NULL;
while (mu_next_command(ctx, &cmd)) {
switch (cmd->type) {
case MU_COMMAND_TEXT: r_draw_text(cmd->text.str, cmd->text.pos, cmd->text.color); break;
case MU_COMMAND_RECT: r_draw_rect(cmd->rect.rect, cmd->rect.color); break;
case MU_COMMAND_ICON: r_draw_icon(cmd->icon.id, cmd->icon.rect, cmd->icon.color); break;
case MU_COMMAND_CLIP: r_set_clip_rect(cmd->clip.rect); break;
}
}
r_present();
}
return 0;
}