Pixel to density independent pixel to pixel conversion
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Physical pixel (px)
Density independent pixel (dp)
Dots per inch (dpi) .. physical pixels per inch
px = dp * (dpi / 160)
Density independent pixel (dp)
Dots per inch (dpi) .. physical pixels per inch
px = dp * (dpi / 160)
public static int dpToPx(int dp)
{
return (int) (dp * Resources.getSystem().getDisplayMetrics().density);
}
public static int pxToDp(int px)
{
return (int) (px / Resources.getSystem().getDisplayMetrics().density);
}
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For some graphics you can use Paint.NET editor.
//www.getpaint.net/
How create Snow Effects on Text by 1 minute show this video:
//www.getpaint.net/
How create Snow Effects on Text by 1 minute show this video:
| Brand | Samsung |
| Model (codename) | Galaxy Mini (S5570) |
| Price (cena, včetně DPH) | 3500 / 06.2012 |
| Display size in Inch (v palcích) | 3.14 |
| Display-resolution | 240x320 |
| Dotek-typ | kapacitní |
| CPU typ | MSM7227 |
| CPU MHz | 600 |
| CPU core | |
| L2 cache | yes |
| RAM | 256 |
| ROM | 512 |
| GPU | Adreno 200 |
| NenaMark2 Benchmark | |
| GPU-GLBenchmark | |
| Baterie mAh | 1200 |
| Foto MPx | 3 |
| Autofocus | no |
| Video | QVGA (320 x 240) při 15 frames/s |
| Official Android ICS | Android Froyo 2.2 |
| CyanogenMod support | yes |
| Dotek-prstů-max | Dual-touch (two fingers) |
| Display-ppi | 127 |
| Display-retina | 39% |
| Networks | GSM&EDGE (850 / 900 / 1.800 / 1.900 MHz) 3G (900 / 2.100 MHz) |
| Connectivity | Bluetooth V2.1 , USB V2.0 , USB mass storage , SyncML(DM) , WIFI , AGPS, 3.5 mm jack |
| Note |
Samsung S5570 Galaxy Mini - image
Hide module - open dialog: File > Project Structure Ctrl + Alt + Shift + S
Hide module: in opened Dialog select module which will hidden and click on minus (left upper corner)
If module is hidden, you can permanetly delete module from disk. But if you want using module in future, copy module into other folder (not into AndroidProjects folder and his subbfolders) and delete module permanetly from project and disc. Right mouse click on module and select from menu Delete.
If you want import the backup copy to project, use: File>New>Import mudule
Hide module: in opened Dialog select module which will hidden and click on minus (left upper corner)
If module is hidden, you can permanetly delete module from disk. But if you want using module in future, copy module into other folder (not into AndroidProjects folder and his subbfolders) and delete module permanetly from project and disc. Right mouse click on module and select from menu Delete.
If you want import the backup copy to project, use: File>New>Import mudule
////www.apache.org/licenses/LICENSE-2.0
private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private ColorMatrix mCM = new ColorMatrix();
private Bitmap mBitmap;
private float mSaturation;
private float mAngle;
//..........
mBitmap = BitmapFactory.decodeResource(context.getResources(),
R.drawable.my_image);
//..........
private static void setContrastScaleOnly(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
scale, 0, 0, 0, 0,
0, scale, 0, 0, 0,
0, 0, scale, 0, 0,
0, 0, 0, 1, 0 });
}
private static void setContrast(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
scale, 0, 0, 0, translate,
0, scale, 0, 0, translate,
0, 0, scale, 0, translate,
0, 0, 0, 1, 0 });
}
private static void setContrastTranslateOnly(ColorMatrix cm, float contrast) {
float scale = contrast + 1.f;
float translate = (-.5f * scale + .5f) * 255.f;
cm.set(new float[] {
1, 0, 0, 0, translate,
0, 1, 0, 0, translate,
0, 0, 1, 0, translate,
0, 0, 0, 1, 0 });
}
@Override protected void onDraw(Canvas canvas) {
Paint paint = mPaint;
float x = 20;
float y = 20;
canvas.drawColor(Color.WHITE);
paint.setColorFilter(null);
canvas.drawBitmap(mBitmap, x, y, paint);
ColorMatrix cm = new ColorMatrix();
mAngle += 2;
if (mAngle > 180) {
mAngle = 0;
}
//convert our animated angle [-180...180] to a contrast value of [-1..1]
float contrast = mAngle / 180.f;
setContrast(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x + mBitmap.getWidth() + 10, y, paint);
setContrastScaleOnly(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x, y + mBitmap.getHeight() + 10, paint);
setContrastTranslateOnly(cm, contrast);
paint.setColorFilter(new ColorMatrixColorFilter(cm));
canvas.drawBitmap(mBitmap, x, y + 2*(mBitmap.getHeight() + 10),
paint);
invalidate();
}
}
If project is in workspace and only not visible in project explorer using this:
Click on some project in project explorer
Menu:
File
Import project
Existing Projects into Workspace
Editace: 2015-12-02 19:01:06
Počet článků v kategorii: 397
Url:pixel-to-density-independent-pixel-to-pixel-conversion
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