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FEAT: libwidget.c

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boreddevnl
2026-03-22 22:07:30 +01:00
parent 4e8ea5acd2
commit 63749b8734
12 changed files with 1318 additions and 909 deletions
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136
src/userland/gui/boredword.c
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@@ -4,6 +4,7 @@
#include "libc/syscall.h"
#include "libc/libui.h"
#include "libc/stdlib.h"
#include "../../wm/libwidget.h"
#include <stddef.h>
#define COLOR_DARK_PANEL 0xFF202020
@@ -90,8 +91,30 @@ static char open_filename[256] = "";
static _Bool file_modified = 0;
static int scroll_y = 0;
static _Bool is_dragging_scrollbar = 0;
static int scrollbar_drag_offset_y = 0;
static widget_scrollbar_t doc_scrollbar;
static void word_draw_rect(void *user_data, int x, int y, int w, int h, uint32_t color) {
ui_draw_rect((ui_window_t)user_data, x, y, w, h, color);
}
static void word_draw_rounded_rect_filled(void *user_data, int x, int y, int w, int h, int r, uint32_t color) {
ui_draw_rounded_rect_filled((ui_window_t)user_data, x, y, w, h, r, color);
}
static void word_draw_string(void *user_data, int x, int y, const char *str, uint32_t color) {
ui_draw_string((ui_window_t)user_data, x, y, str, color);
}
static widget_context_t word_ctx = {
.user_data = 0,
.draw_rect = word_draw_rect,
.draw_rounded_rect_filled = word_draw_rounded_rect_filled,
.draw_string = word_draw_string,
.mark_dirty = NULL
};
static void word_on_scroll(void *user_data, int new_scroll_y) {
(void)user_data;
scroll_y = new_scroll_y;
}
static _Bool is_in_selection(int p, int r, int c);
@@ -1301,20 +1324,13 @@ static void draw_document(ui_window_t win) {
set_active_font(win, 0);
int content_h = current_page * (page_h + 20) + page_h + 20;
if (content_h > win_h - 40) {
int sb_x = win_w - 12;
int sb_w = 12;
int sb_h = win_h - 40;
float ratio = (float)(win_h - 40) / (float)content_h;
int thumb_h = (int)(sb_h * ratio);
if (thumb_h < 20) thumb_h = 20;
int max_scroll = content_h - (win_h - 40);
if (scroll_y > max_scroll) scroll_y = max_scroll;
int thumb_y = 40 + (int)(((float)scroll_y / max_scroll) * (sb_h - thumb_h));
ui_draw_rect(win, sb_x, 40, sb_w, sb_h, 0xFF303030);
ui_draw_rounded_rect_filled(win, sb_x+2, thumb_y+2, sb_w-4, thumb_h-4, 4, 0xFF606060);
}
doc_scrollbar.x = win_w - 12;
doc_scrollbar.y = 40;
doc_scrollbar.w = 12;
doc_scrollbar.h = win_h - 40;
doc_scrollbar.on_scroll = word_on_scroll;
widget_scrollbar_update(&doc_scrollbar, content_h, scroll_y);
widget_scrollbar_draw(&word_ctx, &doc_scrollbar);
}
static void ensure_cursor_visible(ui_window_t win) {
@@ -1645,32 +1661,8 @@ static void handle_click(ui_window_t win, int x, int y) {
}
}
content_h = dummy_page * (page_h + 20) + page_h + 20;
int sb_x = win_w - 12;
int sb_w = 12;
int sb_h = win_h - 40;
int thumb_y = 40;
int thumb_h = 0;
int max_scroll = 0;
if (content_h > win_h - 40) {
float ratio = (float)(win_h - 40) / (float)content_h;
thumb_h = (int)(sb_h * ratio);
if (thumb_h < 20) thumb_h = 20;
max_scroll = content_h - (win_h - 40);
if (scroll_y > max_scroll) scroll_y = max_scroll;
thumb_y = 40 + (int)(((float)scroll_y / max_scroll) * (sb_h - thumb_h));
}
if (content_h > win_h - 40 && x >= sb_x && x < sb_x + sb_w) {
if (y >= thumb_y && y < thumb_y + thumb_h) {
is_dragging_scrollbar = 1;
scrollbar_drag_offset_y = y - thumb_y;
} else {
if (y < thumb_y) scroll_y -= (win_h - 40);
else scroll_y += (win_h - 40);
if (scroll_y < 0) scroll_y = 0;
if (scroll_y > max_scroll) scroll_y = max_scroll;
}
widget_scrollbar_update(&doc_scrollbar, content_h, scroll_y);
if (widget_scrollbar_handle_mouse(&doc_scrollbar, x, y, true, NULL)) {
return;
}
@@ -1848,12 +1840,15 @@ int main(int argc, char **argv) {
(void)argv;
ui_window_t win = ui_window_create("BoredWord", 100, 100, win_w, win_h);
if (!win) return 1;
word_ctx.user_data = (void*)win;
ui_window_set_resizable(win, 1);
load_fonts();
set_active_font(win, 0);
init_doc();
widget_scrollbar_init(&doc_scrollbar, win_w - 12, 40, 12, win_h - 40);
if (argc > 1) {
load_file(win, argv[1]);
}
@@ -1892,61 +1887,12 @@ int main(int argc, char **argv) {
needs_repaint = 1;
} else if (ev.type == GUI_EVENT_MOUSE_UP) {
is_dragging = 0;
is_dragging_scrollbar = 0;
widget_scrollbar_handle_mouse(&doc_scrollbar, ev.arg1, ev.arg2, false, NULL);
needs_repaint = 1;
} else if (ev.type == GUI_EVENT_MOUSE_MOVE) {
if (is_dragging_scrollbar) {
int pw, ph; get_page_size(&pw, &ph);
int doc_view_w = win_w - 40;
float scale = (float)doc_view_w / (float)pw; if (scale > 1.0f) scale = 1.0f;
int page_w = (int)(pw * scale);
int page_h = (int)(ph * scale);
int content_h = 0;
int dummy_y = 10; int dummy_page = 0;
for(int p=0; p<para_count; p++) {
Paragraph *para = &paragraphs[p]; int start_run = 0; int start_char = 0;
while(start_run < para->run_count) {
int max_h = 16; int end_run = start_run; int end_char = start_char; int line_w = 0;
int r_idx = start_run; int c_idx = start_char; int last_space_run = -1; int last_space_char = -1; int last_space_w = 0;
while(r_idx < para->run_count) {
TextRun *run = &para->runs[r_idx]; set_active_font(win, run->font_idx);
int fh = ui_get_font_height_scaled(run->font_size); if (fh > max_h) max_h = fh;
while(c_idx < run->len) {
char buf[2] = {run->text[c_idx], 0}; int cw = ui_get_string_width_scaled(buf, run->font_size);
if (run->text[c_idx] == ' ') { last_space_run = r_idx; last_space_char = c_idx; last_space_w = line_w + cw; }
if (line_w + cw > page_w - 20) break;
line_w += cw; c_idx++;
}
if (c_idx < run->len) break;
r_idx++; c_idx = 0;
}
if (r_idx < para->run_count || (r_idx == para->run_count - 1 && c_idx < para->runs[r_idx].len)) {
if (last_space_run != -1 && (last_space_run > start_run || last_space_char > start_char)) { end_run = last_space_run; end_char = last_space_char; line_w = last_space_w; }
else { end_run = r_idx; end_char = c_idx; }
} else { end_run = para->run_count; end_char = 0; }
int line_h = (int)(max_h * para->spacing) + 4;
if (dummy_y + line_h > dummy_page * (page_h + 20) + page_h - 10) { dummy_page++; dummy_y = dummy_page * (page_h + 20) + 10; }
dummy_y += line_h; start_run = end_run; start_char = end_char;
if (start_run < para->run_count && para->runs[start_run].text[start_char] == ' ') { start_char++; if (start_char >= para->runs[start_run].len) { start_char = 0; start_run++; } }
}
}
content_h = dummy_page * (page_h + 20) + page_h + 20;
if (content_h > win_h - 40) {
int sb_h = win_h - 40;
float ratio = (float)(win_h - 40) / (float)content_h;
int thumb_h = (int)(sb_h * ratio);
if (thumb_h < 20) thumb_h = 20;
int max_scroll = content_h - (win_h - 40);
int new_thumb_y = ev.arg2 - scrollbar_drag_offset_y;
if (new_thumb_y < 40) new_thumb_y = 40;
if (new_thumb_y > 40 + sb_h - thumb_h) new_thumb_y = 40 + sb_h - thumb_h;
scroll_y = (int)(((float)(new_thumb_y - 40) / (sb_h - thumb_h)) * max_scroll);
needs_repaint = 1;
}
if (doc_scrollbar.is_dragging) {
widget_scrollbar_handle_mouse(&doc_scrollbar, ev.arg1, ev.arg2, true, NULL);
needs_repaint = 1;
} else if (is_dragging && ev.arg2 >= 40 && active_dialog == 0 && active_dropdown == 0) {
handle_click(win, ev.arg1, ev.arg2);
needs_repaint = 1;