#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: alternate font for disabled entries
-// 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;
void NextRow();
void PreviousRow();
void SelectIndex(int index);
+ int SelectedIndex() const { return selected; }
+ bool IsSelected(int index) const { return index == selected; }
int EntryCount() const { return entries.size(); }
T &ValueAt(int index) { return entries[index].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);
}
}