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react-native-linear-gradient
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update LinearGradientView 

Should fix #48 and #49
This commit is contained in:
Samy Al Zahrani 2015-12-25 12:18:05 +03:00
parent 50ea255fb4
commit a2503d0666
1 changed files with 21 additions and 22 deletions
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43
android/src/main/java/com/BV/LinearGradient/LinearGradientView.java
View File

@ -14,12 +14,13 @@ import com.facebook.react.uimanager.CatalystStylesDiffMap;
public class LinearGradientView extends View {
public static Paint mPaint;
public static LinearGradient mShader;
public static float[] mLocations;
public static int[] mStartPos;
public static int[] mEndPos;
public static int[] mColors;
private Paint mPaint;
private LinearGradient mShader;
private float[] mLocations;
private int[] mStartPos;
private int[] mEndPos;
private int[] mColors;
private int[] mSize;
public LinearGradientView(Context context, CatalystStylesDiffMap props) {
super(context, null);
@ -66,8 +67,8 @@ public class LinearGradientView extends View {
//default to full height.
mEndPos = new int[]{0, getMeasuredHeight()};
}
drawGradient(null, null, null, null);
mSize = new int[]{0, 0};
drawGradient();
}
public void updateStartPosition(ReadableArray startPos) {
@ -78,7 +79,8 @@ public class LinearGradientView extends View {
} catch (Exception e) {
_startPos = new int[]{0,0};
}
drawGradient(_startPos, null, null, null);
mStartPos = _startPos;
drawGradient();
}
@ -90,7 +92,8 @@ public class LinearGradientView extends View {
} catch (Exception e) {
_endPos = new int[]{0,0};
}
drawGradient(null,_endPos, null, null);
mEndPos = _endPos;
drawGradient();
}
@ -100,7 +103,8 @@ public class LinearGradientView extends View {
{
_colors[i] = colors.getInt(i);
}
drawGradient(null, null, _colors, null);
mColors = _colors;
drawGradient();
}
public void updateLocations(ReadableArray locations){
@ -115,23 +119,18 @@ public class LinearGradientView extends View {
} catch (Exception e) {
_locations = null;
}
drawGradient(null, null, null, _locations);
mLocations = _locations;
drawGradient();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
//TODO: Ensure that we don't override a specified startPos / endPos
int[] _endPos = new int[]{mEndPos[0], h};
drawGradient(null, _endPos, null, null);
mSize = new int[]{w, h};
drawGradient();
}
private void drawGradient(int[] startPos, int[] endPos, int[] colors, float[] locations) {
mStartPos = startPos != null ? startPos : mStartPos;
mEndPos = endPos != null ? endPos : mEndPos;
mColors = colors != null ? colors : mColors;
mLocations = locations;
//locations can be null, thats just fine, so pass it as such.
mShader = new LinearGradient(mStartPos[0], mStartPos[1], mEndPos[0], mEndPos[1], mColors, locations, Shader.TileMode.MIRROR);
private void drawGradient() {
mShader = new LinearGradient(mStartPos[0] * mSize[0], mStartPos[1] * mSize[1], mEndPos[0] * mSize[0], mEndPos[1] * mSize[1], mColors, mLocations, Shader.TileMode.MIRROR);
mPaint.setShader(mShader);
invalidate();
}