support for quoting messages

2 files changed, 81 insertions, 0 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/text/DividerSpan.java b/src/main/java/de/pixart/messenger/ui/text/DividerSpan.java
new file mode 100644
index 000000000..672a267be
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/ui/text/DividerSpan.java
@@ -0,0 +1,29 @@
+package de.pixart.messenger.ui.text;
+
+import android.text.TextPaint;
+import android.text.style.MetricAffectingSpan;
+
+public class DividerSpan extends MetricAffectingSpan {
+
+    private static final float PROPORTION = 0.3f;
+
+    private final boolean large;
+
+    public DividerSpan(boolean large) {
+        this.large = large;
+    }
+
+    public boolean isLarge() {
+        return large;
+    }
+
+    @Override
+    public void updateDrawState(TextPaint tp) {
+        tp.setTextSize(tp.getTextSize() * PROPORTION);
+    }
+
+    @Override
+    public void updateMeasureState(TextPaint p) {
+        p.setTextSize(p.getTextSize() * PROPORTION);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java b/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java
new file mode 100644
index 000000000..a24575509
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/ui/text/QuoteSpan.java
@@ -0,0 +1,52 @@
+package de.pixart.messenger.ui.text;
+
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.text.Layout;
+import android.text.TextPaint;
+import android.text.style.CharacterStyle;
+import android.text.style.LeadingMarginSpan;
+import android.util.DisplayMetrics;
+import android.util.TypedValue;
+
+public class QuoteSpan extends CharacterStyle implements LeadingMarginSpan {
+
+    private final int color;
+
+    private final int width;
+    private final int paddingLeft;
+    private final int paddingRight;
+
+    private static final float WIDTH_SP = 2f;
+    private static final float PADDING_LEFT_SP = 1.5f;
+    private static final float PADDING_RIGHT_SP = 8f;
+
+    public QuoteSpan(int color, DisplayMetrics metrics) {
+        this.color = color;
+        this.width = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, WIDTH_SP, metrics);
+        this.paddingLeft = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, PADDING_LEFT_SP, metrics);
+        this.paddingRight = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, PADDING_RIGHT_SP, metrics);
+    }
+
+    @Override
+    public void updateDrawState(TextPaint tp) {
+        tp.setColor(this.color);
+    }
+
+    @Override
+    public int getLeadingMargin(boolean first) {
+        return paddingLeft + width + paddingRight;
+    }
+
+    @Override
+    public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, int top, int baseline, int bottom,
+                                  CharSequence text, int start, int end, boolean first, Layout layout) {
+        Paint.Style style = p.getStyle();
+        int color = p.getColor();
+        p.setStyle(Paint.Style.FILL);
+        p.setColor(this.color);
+        c.drawRect(x + dir * paddingLeft, top, x + dir * (paddingLeft + width), bottom, p);
+        p.setStyle(style);
+        p.setColor(color);
+    }
+}
\ No newline at end of file