void GUIFontPrint(const struct GUIFont* font, int x, int y, enum GUIAlignment align, uint32_t color, const char* text) {
switch (align & GUI_ALIGN_HCENTER) {
case GUI_ALIGN_HCENTER:
x -= GUIFontSpanWidth(font, text) / 2;
break;
case GUI_ALIGN_RIGHT:
x -= GUIFontSpanWidth(font, text);
break;
default:
break;
}
size_t len = strlen(text);
while (len) {
uint32_t c = utf8Char(&text, &len);
if (c == '\1') {
c = utf8Char(&text, &len);
if (c < GUI_ICON_MAX) {
GUIFontDrawIcon(font, x, y, GUI_ALIGN_BOTTOM, GUI_ORIENT_0, color, c);
unsigned w;
GUIFontIconMetrics(font, c, &w, 0);
x += w;
}
} else {
GUIFontDrawGlyph(font, x, y, color, c);
x += GUIFontGlyphWidth(font, c);
}
}
}
unsigned GUIFontSpanWidth(const struct GUIFont* font, const char* text) {
unsigned width = 0;
size_t len = strlen(text);
while (len) {
uint32_t c = utf8Char(&text, &len);
if (c == '\1') {
c = utf8Char(&text, &len);
if (c < GUI_ICON_MAX) {
unsigned w;
GUIFontIconMetrics(font, c, &w, 0);
width += w;
}
} else {
width += GUIFontGlyphWidth(font, c);
}
}
return width;
}
enum GUIMenuExitReason GUIShowMenu(struct GUIParams* params, struct GUIMenu* menu, struct GUIMenuItem** item) {
size_t start = 0;
size_t lineHeight = GUIFontHeight(params->font);
size_t pageSize = params->height / lineHeight;
if (pageSize > 4) {
pageSize -= 4;
} else {
pageSize = 1;
}
int cursorOverItem = 0;
GUIInvalidateKeys(params);
while (true) {
#ifdef _3DS
if (!aptMainLoop()) {
return GUI_MENU_EXIT_CANCEL;
}
#endif
uint32_t newInput = 0;
GUIPollInput(params, &newInput, 0);
unsigned cx, cy;
enum GUICursorState cursor = GUIPollCursor(params, &cx, &cy);
if (newInput & (1 << GUI_INPUT_UP) && menu->index > 0) {
--menu->index;
}
if (newInput & (1 << GUI_INPUT_DOWN) && menu->index < GUIMenuItemListSize(&menu->items) - 1) {
++menu->index;
}
if (newInput & (1 << GUI_INPUT_LEFT)) {
struct GUIMenuItem* item = GUIMenuItemListGetPointer(&menu->items, menu->index);
if (item->validStates) {
if (item->state > 0) {
unsigned oldState = item->state;
do {
--item->state;
} while (!item->validStates[item->state] && item->state > 0);
if (!item->validStates[item->state]) {
item->state = oldState;
}
}
} else if (menu->index >= pageSize) {
menu->index -= pageSize;
} else {
menu->index = 0;
}
}
if (newInput & (1 << GUI_INPUT_RIGHT)) {
struct GUIMenuItem* item = GUIMenuItemListGetPointer(&menu->items, menu->index);
if (item->validStates) {
if (item->state < item->nStates - 1) {
unsigned oldState = item->state;
do {
++item->state;
} while (!item->validStates[item->state] && item->state < item->nStates - 1);
if (!item->validStates[item->state]) {
item->state = oldState;
}
}
} else if (menu->index + pageSize < GUIMenuItemListSize(&menu->items)) {
menu->index += pageSize;
} else {
menu->index = GUIMenuItemListSize(&menu->items) - 1;
}
}
if (cursor != GUI_CURSOR_NOT_PRESENT) {
if (cx < params->width - 16) {
int index = (cy / lineHeight) - 2;
if (index >= 0 && index + start < GUIMenuItemListSize(&menu->items)) {
if (menu->index != index + start || !cursorOverItem) {
cursorOverItem = 1;
}
menu->index = index + start;
} else {
cursorOverItem = 0;
}
} else if (cursor == GUI_CURSOR_DOWN || cursor == GUI_CURSOR_DRAGGING) {
if (cy <= 2 * lineHeight && cy > lineHeight && menu->index > 0) {
--menu->index;
} else if (cy <= params->height && cy > params->height - lineHeight && menu->index < GUIMenuItemListSize(&menu->items) - 1) {
++menu->index;
} else if (cy <= params->height - lineHeight && cy > 2 * lineHeight) {
size_t location = cy - 2 * lineHeight;
location *= GUIMenuItemListSize(&menu->items) - 1;
menu->index = location / (params->height - 3 * lineHeight);
}
}
}
if (menu->index < start) {
start = menu->index;
}
while ((menu->index - start + 4) * lineHeight > params->height) {
++start;
}
if (newInput & (1 << GUI_INPUT_CANCEL)) {
break;
}
if (newInput & (1 << GUI_INPUT_SELECT) || (cursorOverItem == 2 && cursor == GUI_CURSOR_CLICKED)) {
*item = GUIMenuItemListGetPointer(&menu->items, menu->index);
if ((*item)->submenu) {
enum GUIMenuExitReason reason = GUIShowMenu(params, (*item)->submenu, item);
if (reason != GUI_MENU_EXIT_BACK) {
return reason;
}
} else {
return GUI_MENU_EXIT_ACCEPT;
}
}
if (cursorOverItem == 1 && (cursor == GUI_CURSOR_UP || cursor == GUI_CURSOR_NOT_PRESENT)) {
cursorOverItem = 2;
}
if (newInput & (1 << GUI_INPUT_BACK)) {
return GUI_MENU_EXIT_BACK;
}
params->drawStart();
if (menu->background) {
menu->background->draw(menu->background, GUIMenuItemListGetPointer(&menu->items, menu->index)->data);
}
if (params->guiPrepare) {
params->guiPrepare();
}
unsigned y = lineHeight;
GUIFontPrint(params->font, 0, y, GUI_ALIGN_LEFT, 0xFFFFFFFF, menu->title);
if (menu->subtitle) {
GUIFontPrint(params->font, 0, y * 2, GUI_ALIGN_LEFT, 0xFFFFFFFF, menu->subtitle);
}
y += 2 * lineHeight;
size_t itemsPerScreen = (params->height - y) / lineHeight;
size_t i;
for (i = start; i < GUIMenuItemListSize(&menu->items); ++i) {
int color = 0xE0A0A0A0;
if (i == menu->index) {
color = 0xFFFFFFFF;
GUIFontDrawIcon(params->font, lineHeight * 0.8f, y, GUI_ALIGN_BOTTOM | GUI_ALIGN_RIGHT, GUI_ORIENT_0, 0xFFFFFFFF, GUI_ICON_POINTER);
}
struct GUIMenuItem* item = GUIMenuItemListGetPointer(&menu->items, i);
GUIFontPrint(params->font, lineHeight, y, GUI_ALIGN_LEFT, color, item->title);
if (item->validStates && item->validStates[item->state]) {
GUIFontPrintf(params->font, params->width, y, GUI_ALIGN_RIGHT, color, "%s ", item->validStates[item->state]);
}
y += lineHeight;
if (y + lineHeight > params->height) {
break;
}
}
if (itemsPerScreen < GUIMenuItemListSize(&menu->items)) {
size_t top = 2 * lineHeight;
size_t bottom = params->height - 8;
unsigned w;
unsigned right;
GUIFontIconMetrics(params->font, GUI_ICON_SCROLLBAR_BUTTON, &right, 0);
GUIFontIconMetrics(params->font, GUI_ICON_SCROLLBAR_TRACK, &w, 0);
right = (right - w) / 2;
GUIFontDrawIcon(params->font, params->width - 8, top, GUI_ALIGN_HCENTER | GUI_ALIGN_BOTTOM, GUI_ORIENT_VMIRROR, 0xFFFFFFFF, GUI_ICON_SCROLLBAR_BUTTON);
GUIFontDrawIconSize(params->font, params->width - right - 8, top, 0, bottom - top, 0xFFFFFFFF, GUI_ICON_SCROLLBAR_TRACK);
GUIFontDrawIcon(params->font, params->width - 8, bottom, GUI_ALIGN_HCENTER | GUI_ALIGN_TOP, GUI_ORIENT_0, 0xFFFFFFFF, GUI_ICON_SCROLLBAR_BUTTON);
y = menu->index * (bottom - top - 16) / GUIMenuItemListSize(&menu->items);
GUIFontDrawIcon(params->font, params->width - 8, top + y, GUI_ALIGN_HCENTER | GUI_ALIGN_TOP, GUI_ORIENT_0, 0xFFFFFFFF, GUI_ICON_SCROLLBAR_THUMB);
}
GUIDrawBattery(params);
GUIDrawClock(params);
if (cursor != GUI_CURSOR_NOT_PRESENT) {
GUIFontDrawIcon(params->font, cx, cy, GUI_ALIGN_HCENTER | GUI_ALIGN_TOP, GUI_ORIENT_0, 0xFFFFFFFF, GUI_ICON_CURSOR);
}
if (params->guiFinish) {
params->guiFinish();
}
params->drawEnd();
}
return GUI_MENU_EXIT_CANCEL;
}
