feat: port Disks app to MTK

programs/src/disks/disks.h

@@ -10,7 +10,7 @@
 #include <montauk/string.h>
 #include <montauk/heap.h>
 #include <gui/gui.hpp>
-#include <gui/truetype.hpp>
+#include <gui/font.hpp>
 
 extern "C" {
 #include <string.h>
@@ -33,7 +33,6 @@ static constexpr int MAP_PAD      = 16;
 static constexpr int MAX_PARTS    = 32;
 static constexpr int MAX_DISKS    = 8;
 static constexpr int STATUS_H     = 26;
-static constexpr int FONT_SIZE    = 16;
 
 static constexpr int TB_BTN_Y     = 7;
 static constexpr int TB_BTN_H     = 26;
@@ -120,7 +119,6 @@ struct DiskToolState {
 
 extern int g_win_w, g_win_h;
 extern DiskToolState g_state;
-extern TrueTypeFont* g_font;
 
 // ============================================================================
 // Partition colors
@@ -128,6 +126,79 @@ extern TrueTypeFont* g_font;
 
 extern const Color part_colors[NUM_PART_COLORS];
 
+// ============================================================================
+// Shared layout helpers
+// ============================================================================
+
+inline int disk_button_width(int idx) {
+    char label[8];
+    snprintf(label, sizeof(label), "Disk %d", idx);
+    return text_width(label) + 16;
+}
+
+inline Rect toolbar_disk_button_rect(int idx) {
+    int bx = 8;
+    for (int i = 0; i < idx; i++)
+        bx += disk_button_width(i) + 6;
+    return {bx, TB_BTN_Y, disk_button_width(idx), TB_BTN_H};
+}
+
+inline Rect toolbar_refresh_button_rect() {
+    return {g_win_w - 8 - 64, TB_BTN_Y, 64, TB_BTN_H};
+}
+
+inline Rect toolbar_mount_button_rect() {
+    Rect refresh = toolbar_refresh_button_rect();
+    return {refresh.x - 6 - 60, TB_BTN_Y, 60, TB_BTN_H};
+}
+
+inline Rect toolbar_format_button_rect() {
+    Rect mount = toolbar_mount_button_rect();
+    return {mount.x - 6 - 64, TB_BTN_Y, 64, TB_BTN_H};
+}
+
+inline Rect toolbar_newpart_button_rect() {
+    Rect format = toolbar_format_button_rect();
+    return {format.x - 6 - 74, TB_BTN_Y, 74, TB_BTN_H};
+}
+
+inline int content_title_y() {
+    return TOOLBAR_H + 8;
+}
+
+inline int partition_map_y() {
+    return content_title_y() + system_font_height() + 8;
+}
+
+inline int partition_header_y() {
+    return partition_map_y() + MAP_H + 8;
+}
+
+inline int partition_list_y() {
+    return partition_header_y() + HEADER_H;
+}
+
+inline Rect format_option_rect(int dialog_w, int index) {
+    int fh = system_font_height();
+    int sel_y = 12 + fh * 2 + 18;
+    int opt_y = sel_y + fh + 8;
+    return {24, opt_y + index * 32, dialog_w - 48, 28};
+}
+
+inline Rect dialog_primary_button_rect(int dialog_w, int dialog_h) {
+    int btn_w = 90;
+    int btn_h = 30;
+    int gap = 16;
+    int total_w = btn_w * 2 + gap;
+    int bx = (dialog_w - total_w) / 2;
+    return {bx, dialog_h - btn_h - 16, btn_w, btn_h};
+}
+
+inline Rect dialog_secondary_button_rect(int dialog_w, int dialog_h) {
+    Rect primary = dialog_primary_button_rect(dialog_w, dialog_h);
+    return {primary.x + primary.w + 16, primary.y, primary.w, primary.h};
+}
+
 // ============================================================================
 // Function declarations — helpers (main.cpp)
 // ============================================================================