/***
* Excerpted from "Hello, Android! 3e",
* published by The Pragmatic Bookshelf.
* Copyrights apply to this code. It may not be used to create training material,
* courses, books, articles, and the like. Contact us if you are in doubt.
* We make no guarantees that this code is fit for any purpose.
* Visit http://www.pragmaticprogrammer.com/titles/eband3 for more book information.
***/
package org.example.sudoku;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Paint.FontMetrics;
import android.graphics.Paint.Style;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AnimationUtils;
public class PuzzleView extends View {
private static final String TAG = "Sudoku";
private static final String SELX = "selX";
private static final String SELY = "selY";
private static final String VIEW_STATE = "viewState";
private static final int ID = 42;
private float width; // width of one tile
private float height; // height of one tile
private int selX; // X index of selection
private int selY; // Y index of selection
private final Rect selRect = new Rect();
private final Game game;
public PuzzleView(Context context) {
super(context);
this.game = (Game) context;
setFocusable(true);
setFocusableInTouchMode(true);
// ...
setId(ID);
}
@Override
protected Parcelable onSaveInstanceState() {
Parcelable p = super.onSaveInstanceState();
Log.d(TAG, "onSaveInstanceState");
Bundle bundle = new Bundle();
bundle.putInt(SELX, selX);
bundle.putInt(SELY, selY);
bundle.putParcelable(VIEW_STATE, p);
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
Log.d(TAG, "onRestoreInstanceState");
Bundle bundle = (Bundle) state;
select(bundle.getInt(SELX), bundle.getInt(SELY));
super.onRestoreInstanceState(bundle.getParcelable(VIEW_STATE));
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
width = w / 9f;
height = h / 9f;
getRect(selX, selY, selRect);
Log.d(TAG, "onSizeChanged: width " + width + ", height "
+ height);
super.onSizeChanged(w, h, oldw, oldh);
}
@Override
protected void onDraw(Canvas canvas) {
// Draw the background...
Paint background = new Paint();
background.setColor(getResources().getColor(
R.color.puzzle_background));
canvas.drawRect(0, 0, getWidth(), getHeight(), background);
// Draw the board...
// Define colors for the grid lines
Paint dark = new Paint();
dark.setColor(getResources().getColor(R.color.puzzle_dark));
Paint hilite = new Paint();
hilite.setColor(getResources().getColor(R.color.puzzle_hilite));
Paint light = new Paint();
light.setColor(getResources().getColor(R.color.puzzle_light));
// Draw the minor grid lines
for (int i = 0; i < 9; i++) {
canvas.drawLine(0, i * height, getWidth(), i * height,
light);
canvas.drawLine(0, i * height + 1, getWidth(), i * height
+ 1, hilite);
canvas.drawLine(i * width, 0, i * width, getHeight(),
light);
canvas.drawLine(i * width + 1, 0, i * width + 1,
getHeight(), hilite);
}
// Draw the major grid lines
for (int i = 0; i < 9; i++) {
if (i % 3 != 0)
continue;
canvas.drawLine(0, i * height, getWidth(), i * height,
dark);
canvas.drawLine(0, i * height + 1, getWidth(), i * height
+ 1, hilite);
canvas.drawLine(i * width, 0, i * width, getHeight(), dark);
canvas.drawLine(i * width + 1, 0, i * width + 1,
getHeight(), hilite);
}
// Draw the numbers...
// Define color and style for numbers
Paint foreground = new Paint(Paint.ANTI_ALIAS_FLAG);
foreground.setColor(getResources().getColor(
R.color.puzzle_foreground));
foreground.setStyle(Style.FILL);
foreground.setTextSize(height * 0.75f);
foreground.setTextScaleX(width / height);
foreground.setTextAlign(Paint.Align.CENTER);
// Draw the number in the center of the tile
FontMetrics fm = foreground.getFontMetrics();
// Centering in X: use alignment (and X at midpoint)
float x = width / 2;
// Centering in Y: measure ascent/descent first
float y = height / 2 - (fm.ascent + fm.descent) / 2;
for (int i = 0; i < 9; i++) {
for (int j = 0; j < 9; j++) {
canvas.drawText(this.game.getTileString(i, j), i
* width + x, j * height + y, foreground);
}
}
if (Prefs.getHints(getContext())) {
// Draw the hints...
// Pick a hint color based on #moves left
Paint hint = new Paint();
int c[] = { getResources().getColor(R.color.puzzle_hint_0),
getResources().getColor(R.color.puzzle_hint_1),
getResources().getColor(R.color.puzzle_hint_2), };
Rect r = new Rect();
for (int i = 0; i < 9; i++) {
for (int j = 0; j < 9; j++) {
int movesleft = 9 - game.getUsedTiles(i, j).length;
if (movesleft < c.length) {
getRect(i, j, r);
hint.setColor(c[movesleft]);
canvas.drawRect(r, hint);
}
}
}
}
// Draw the selection...
Log.d(TAG, "selRect=" + selRect);
Paint selected = new Paint();
selected.setColor(getResources().getColor(
R.color.puzzle_selected));
canvas.drawRect(selRect, selected);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() != MotionEvent.ACTION_DOWN)
return super.onTouchEvent(event);
select((int) (event.getX() / width),
(int) (event.getY() / height));
game.showKeypadOrError(selX, selY);
Log.d(TAG, "onTouchEvent: x " + selX + ", y " + selY);
return true;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
Log.d(TAG, "onKeyDown: keycode=" + keyCode + ", event="
+ event);
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_UP:
select(selX, selY - 1);
break;
case KeyEvent.KEYCODE_DPAD_DOWN:
select(selX, selY + 1);
break;
case KeyEvent.KEYCODE_DPAD_LEFT:
select(selX - 1, selY);
break;
case KeyEvent.KEYCODE_DPAD_RIGHT:
select(selX + 1, selY);
break;
case KeyEvent.KEYCODE_0:
case KeyEvent.KEYCODE_SPACE: setSelectedTile(0); break;
case KeyEvent.KEYCODE_1: setSelectedTile(1); break;
case KeyEvent.KEYCODE_2: setSelectedTile(2); break;
case KeyEvent.KEYCODE_3: setSelectedTile(3); break;
case KeyEvent.KEYCODE_4: setSelectedTile(4); break;
case KeyEvent.KEYCODE_5: setSelectedTile(5); break;
case KeyEvent.KEYCODE_6: setSelectedTile(6); break;
case KeyEvent.KEYCODE_7: setSelectedTile(7); break;
case KeyEvent.KEYCODE_8: setSelectedTile(8); break;
case KeyEvent.KEYCODE_9: setSelectedTile(9); break;
case KeyEvent.KEYCODE_ENTER:
case KeyEvent.KEYCODE_DPAD_CENTER:
game.showKeypadOrError(selX, selY);
Android_数独源代码(sudoku)
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2012-03-21
16:00:19
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