#define GRAPHICS_MENU_H_
#include "Font.h"
+#include "Sprite.h"
#include "../geometry/operators.h"
#include "../geometry/Point.h"
#include "../geometry/Vector.h"
class Sprite;
-// TODO: disabled entries + alternate font for those
-// TODO: sprite for the cursor
// TODO: animation when top row changes
template<class T>
class Menu {
public:
- explicit Menu(const Font *font = NULL, int charsPerEntry = 16, int rows = 1, int rowGap = 0, int cols = 1, int colGap = 0);
+ Menu();
+ Menu(const Font *font, const Font *disabledFont, const Sprite *cursor, int charsPerEntry, int rows, int rowGap = 0, int cols = 1, int colGap = 0);
public:
int Width() const;
T &Selected() { return entries[selected].value; }
const T &Selected() const { return entries[selected].value; }
const char *SelectedTitle() const { return entries[selected].title; }
+ bool SelectedIsEnabled() const { return entries[selected].enabled; }
void NextItem();
void PreviousItem();
void NextRow();
void PreviousRow();
void SelectIndex(int index);
+ int SelectedIndex() const { return selected; }
+ bool IsSelected(int index) const { return index == selected; }
- void Add(const char *title, const T &value, const Sprite *icon = 0) { entries.push_back(Entry(title, value, icon)); }
+ int EntryCount() const { return entries.size(); }
+ T &ValueAt(int index) { return entries[index].value; }
+ const T &ValueAt(int index) const { return entries[index].value; }
+
+ void Add(const char *title, const T &value, bool enabled = true, const Sprite *icon = 0) { entries.push_back(Entry(title, value, enabled, icon)); }
+ void Disable(int index) { entries[index].enabled = false; }
+ void Enable(int index) { entries[index].enabled = true; }
void Reserve(int n) { entries.reserve(n); }
void Draw(SDL_Surface *dest, geometry::Point<int> position) const;
private:
struct Entry {
- Entry(const char *title, const T &value, const Sprite *icon = 0)
- : title(title), icon(icon), value(value) { }
+ Entry(const char *title, const T &value, bool enabled = true, const Sprite *icon = 0)
+ : title(title), icon(icon), value(value), enabled(enabled) { }
const char *title;
const Sprite *icon;
T value;
+ bool enabled;
};
const Font *font;
+ const Font *disabledFont;
+ const Sprite *cursor;
std::vector<Entry> entries;
int charsPerEntry;
int rows;
template<class T>
-Menu<T>::Menu(const Font *font, int charsPerEntry, int rows, int rowGap, int cols, int colGap)
+Menu<T>::Menu()
+: font(0)
+, disabledFont(0)
+, cursor(0)
+, charsPerEntry(0)
+, rows(0)
+, rowGap(0)
+, cols(0)
+, colGap(0)
+, selected(0)
+, topRow(0) {
+
+}
+
+template<class T>
+Menu<T>::Menu(const Font *font, const Font *disabledFont, const Sprite *cursor, int charsPerEntry, int rows, int rowGap, int cols, int colGap)
: font(font)
+, disabledFont(disabledFont ? disabledFont : font)
+, cursor(cursor)
, charsPerEntry(charsPerEntry)
, rows(rows)
, rowGap(rowGap)
template<class T>
void Menu<T>::SelectIndex(int index) {
- if (index < 0 || entries.size() < index) return;
+ if (index < 0 || int(entries.size()) <= index) return;
selected = index;
- if (GetRow(selected) - rows > topRow) {
- topRow = GetRow(selected) - rows;
+ if (topRow <= GetRow(selected) - rows) {
+ topRow = GetRow(selected) - rows + 1;
} else if (GetRow(selected) < topRow) {
topRow = GetRow(selected);
}
template<class T>
void Menu<T>::Draw(SDL_Surface *dest, geometry::Point<int> position) const {
int start(topRow * cols);
- int slots((topRow + rows) * cols);
+ int slots(rows * cols);
int items(entries.size() - start);
- int end(items < slots ? items : slots);
+ int end(start + (items < slots ? items : slots));
for (int i(0), count(end - start); i < count; ++i) {
- geometry::Vector<int> offset((i % cols) * (ColWidth() + colGap), (i / cols) * RowHeight());
- font->DrawString(entries[start + i].title, dest, position + offset, charsPerEntry);
+ geometry::Vector<int> offset(
+ (i % cols) * (ColWidth() + colGap),
+ (i / cols) * RowHeight());
+ if (entries[start + i].enabled) {
+ font->DrawString(entries[start + i].title, dest, position + offset, charsPerEntry);
+ } else {
+ disabledFont->DrawString(entries[start + i].title, dest, position + offset, charsPerEntry);
+ }
}
+ geometry::Vector<int> cursorOffset(
+ (selected % cols) * (ColWidth() + colGap) - cursor->Width(),
+ ((selected - start) / cols) * RowHeight());
+ cursor->Draw(dest, position + cursorOffset);
}
}