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Graduately/src/subjects.c
pepaskopec-blip d679e81887 Restyle the interface after Umímeto, Apple, and To dáš. 
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-09-17 17:17:54 +02:00

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#include "maturita.h"
/* ------------------------------------------------------------------ */
/* Subjects page — icon grid, one tile per subject */
/* ------------------------------------------------------------------ */
/* Index 0 (Deutsch), NET_SUBJ (networks), HW_SUBJ (hardware) and CZ_SUBJ
* (Czech) are unlocked. */
const char *sub_keys[NUM_SUBJECTS] = {
"Deutsch",
"Správa počítačových sítí",
"Technické vybavení",
"Český jazyk a literatura",
"Občanská nauka",
"English",
"Matematika",
"Fyzika",
"Základy Přírodopisných věd",
"Technická grafika",
"Prezentační grafika",
"Programování",
"Programové vybavení",
};
/* Slice of the global `units[]` table that each subject owns. A start of -1
* (or a count of 0) means the subject has no content yet; such subjects show
* as locked on the statistics page until their units are added. */
const int sub_unit_start[NUM_SUBJECTS] = {
0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
const int sub_unit_count[NUM_SUBJECTS] = {
NUM_UNITS, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
GtkWidget *sub_scroll;
GtkWidget *sub_fixed;
GtkWidget *sub_rail;
GtkWidget *sub_cells[NUM_SUBJECTS];
GtkWidget *sub_labels[NUM_SUBJECTS];
double sub_cx[NUM_SUBJECTS];
double sub_cy[NUM_SUBJECTS];
int sub_rows = 1;
int sub_cols = NUM_SUBJECTS;
int sub_cw;
int sub_ch;
guint sub_idle;
void sub_layout_geometry(double avail) {
(void)avail;
}
void draw_sub_rail(GtkDrawingArea *area, cairo_t *cr,
int width, int height, gpointer user_data) {
(void)area;
(void)cr;
(void)width;
(void)height;
(void)user_data;
}
void sub_apply_layout(void) {
}
void sub_relayout(void) {
}
gboolean sub_relayout_idle(gpointer data) {
(void)data;
sub_idle = 0;
return G_SOURCE_REMOVE;
}
void sub_relayout_later(void) {
}
/* German flag (black / red / gold) drawn in a clipped circle. */
void draw_german_flag(GtkDrawingArea *area, cairo_t *cr,
int width, int height, gpointer data) {
double cx = width / 2.0;
double cy = height / 2.0;
double r = MIN(width, height) / 2.0 - 2.0;
double band = (double)height / 3.0;
(void)area;
(void)data;
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_save(cr);
cairo_new_path(cr);
cairo_arc(cr, cx, cy, r, 0.0, 2.0 * G_PI);
cairo_clip(cr);
cairo_new_path(cr);
cairo_rectangle(cr, 0.0, 0.0, (double)width, band);
cairo_set_source_rgb(cr, 0.18, 0.18, 0.19);
cairo_fill(cr);
cairo_new_path(cr);
cairo_rectangle(cr, 0.0, band, (double)width, band);
cairo_set_source_rgb(cr, 0.72, 0.27, 0.24);
cairo_fill(cr);
cairo_new_path(cr);
cairo_rectangle(cr, 0.0, 2.0 * band, (double)width, band);
cairo_set_source_rgb(cr, 0.84, 0.70, 0.32);
cairo_fill(cr);
cairo_restore(cr);
}
/* Czech flag (white / red with a blue triangle) drawn in a clipped circle. */
void draw_czech_flag(GtkDrawingArea *area, cairo_t *cr,
int width, int height, gpointer data) {
double cx = width / 2.0;
double cy = height / 2.0;
double r = MIN(width, height) / 2.0 - 2.0;
(void)area;
(void)data;
cairo_set_operator(cr, CAIRO_OPERATOR_CLEAR);
cairo_paint(cr);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_save(cr);
cairo_new_path(cr);
cairo_arc(cr, cx, cy, r, 0.0, 2.0 * G_PI);
cairo_clip(cr);
cairo_new_path(cr);
cairo_rectangle(cr, 0.0, 0.0, (double)width, (double)height);
cairo_set_source_rgb(cr, 0.98, 0.98, 0.98);
cairo_fill(cr);
cairo_new_path(cr);
cairo_rectangle(cr, 0.0, (double)height / 2.0,
(double)width, (double)height / 2.0);
cairo_set_source_rgb(cr, 0.83, 0.16, 0.18);
cairo_fill(cr);
cairo_new_path(cr);
cairo_move_to(cr, 0.0, 0.0);
cairo_line_to(cr, (double)width * 0.55, (double)height / 2.0);
cairo_line_to(cr, 0.0, (double)height);
cairo_close_path(cr);
cairo_set_source_rgb(cr, 0.07, 0.24, 0.55);
cairo_fill(cr);
cairo_restore(cr);
}
static gboolean subject_is_open(int i) {
return i == 0 || i == NET_SUBJ || i == HW_SUBJ || i == CZ_SUBJ;
}
static GtkWidget *subject_icon(int i) {
GtkWidget *area = gtk_drawing_area_new();
gtk_widget_set_size_request(area, 48, 48);
gtk_widget_set_halign(area, GTK_ALIGN_CENTER);
if (i == 0)
gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(area),
draw_german_flag, NULL, NULL);
else if (i == NET_SUBJ)
gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(area),
draw_wifi_icon, NULL, NULL);
else if (i == HW_SUBJ)
gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(area),
draw_chip_icon, NULL, NULL);
else if (i == CZ_SUBJ)
gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(area),
draw_czech_flag, NULL, NULL);
else
return icon_area_new(draw_lock_icon, 0.3451, 0.3569, 0.4392, 22);
return area;
}
static const char *subject_target(int i) {
if (i == 0)
return "roadmap";
if (i == NET_SUBJ)
return "netyears";
if (i == HW_SUBJ)
return "hwmap";
if (i == CZ_SUBJ)
return "czechmap";
return NULL;
}
GtkWidget *build_subjects_page(void) {
GtkWidget *page;
GtkWidget *scroll;
GtkWidget *grid;
int i;
page = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_widget_add_css_class(page, "subjects-page");
gtk_widget_set_hexpand(page, TRUE);
gtk_widget_set_vexpand(page, TRUE);
gtk_widget_set_margin_start(page, 40);
gtk_widget_set_margin_end(page, 40);
gtk_widget_set_margin_top(page, 16);
gtk_widget_set_margin_bottom(page, 28);
gtk_box_append(GTK_BOX(page),
top_bar("welcome", "subjects_title", "subjects_sub"));
scroll = gtk_scrolled_window_new();
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_widget_set_vexpand(scroll, TRUE);
gtk_widget_set_margin_top(scroll, 8);
gtk_box_append(GTK_BOX(page), scroll);
sub_scroll = scroll;
grid = gtk_flow_box_new();
gtk_flow_box_set_max_children_per_line(GTK_FLOW_BOX(grid), 5);
gtk_flow_box_set_min_children_per_line(GTK_FLOW_BOX(grid), 3);
gtk_flow_box_set_selection_mode(GTK_FLOW_BOX(grid), GTK_SELECTION_NONE);
gtk_flow_box_set_homogeneous(GTK_FLOW_BOX(grid), TRUE);
gtk_flow_box_set_column_spacing(GTK_FLOW_BOX(grid), 14);
gtk_flow_box_set_row_spacing(GTK_FLOW_BOX(grid), 14);
gtk_widget_set_halign(grid, GTK_ALIGN_CENTER);
gtk_widget_set_hexpand(grid, TRUE);
gtk_widget_add_css_class(grid, "subject-grid");
gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scroll), grid);
sub_fixed = grid;
for (i = 0; i < NUM_SUBJECTS; i++) {
GtkWidget *card;
GtkWidget *inner;
GtkWidget *icon;
GtkWidget *lbl;
const char *target;
gboolean open = subject_is_open(i);
card = gtk_button_new();
gtk_widget_add_css_class(card, "subject-tile");
gtk_widget_set_can_focus(card, open);
gtk_widget_set_hexpand(card, TRUE);
gtk_widget_set_size_request(card, 180, 132);
inner = gtk_box_new(GTK_ORIENTATION_VERTICAL, 10);
gtk_widget_set_halign(inner, GTK_ALIGN_CENTER);
gtk_widget_set_valign(inner, GTK_ALIGN_CENTER);
gtk_button_set_child(GTK_BUTTON(card), inner);
icon = subject_icon(i);
gtk_box_append(GTK_BOX(inner), icon);
lbl = gtk_label_new(NULL);
i18n_bind(lbl, sub_keys[i], 0);
gtk_widget_set_halign(lbl, GTK_ALIGN_CENTER);
gtk_label_set_justify(GTK_LABEL(lbl), GTK_JUSTIFY_CENTER);
gtk_label_set_wrap(GTK_LABEL(lbl), TRUE);
gtk_label_set_max_width_chars(GTK_LABEL(lbl), 16);
gtk_widget_add_css_class(lbl, "subject-name");
gtk_box_append(GTK_BOX(inner), lbl);
if (open) {
gtk_widget_add_css_class(card, "open");
target = subject_target(i);
g_object_set_data_full(G_OBJECT(card), "target",
g_strdup(target), g_free);
g_signal_connect(card, "clicked", G_CALLBACK(on_nav_clicked), NULL);
} else {
gtk_widget_add_css_class(card, "locked");
gtk_widget_add_css_class(lbl, "unit-name-locked");
gtk_widget_set_sensitive(card, FALSE);
}
sub_cells[i] = card;
sub_labels[i] = lbl;
gtk_flow_box_insert(GTK_FLOW_BOX(grid), card, -1);
}
return page;
}
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