Draws a small rect. More...

Inheritance diagram for org.mozilla.gecko.gfx.ScrollbarLayer:

Collaboration diagram for org.mozilla.gecko.gfx.ScrollbarLayer:

Public Member Functions
boolean	fade ()
	Decrease the opacity of the scrollbar by one frame's worth. More...

boolean	unfade ()
	Restore the opacity of the scrollbar to fully opaque. More...

void	draw (RenderContext context)
	Subclasses override this function to draw the layer. More...

Public Member Functions inherited from org.mozilla.gecko.gfx.TileLayer
CairoImage	getImage ()

	TileLayer (CairoImage image, PaintMode paintMode)

void	destroy ()

void	setPaintMode (PaintMode mode)

void	invalidate ()
	Invalidates the entire buffer so that it will be uploaded again. More...

Public Member Functions inherited from org.mozilla.gecko.gfx.Layer
	Layer ()

	Layer (IntSize size)

final boolean	update (RenderContext context)
	Updates the layer. More...

abstract void	draw (RenderContext context)
	Subclasses override this function to draw the layer. More...

Region	getValidRegion (RenderContext context)
	Returns the region of the layer that is considered valid. More...

void	beginTransaction ()
	Call this before modifying the layer. More...

void	endTransaction ()
	Call this when you're done modifying the layer. More...

Rect	getPosition ()
	Returns the current layer position. More...

void	setPosition (Rect newPosition)
	Sets the position. More...

float	getResolution ()
	Returns the current layer's resolution. More...

void	setResolution (float newResolution)
	Sets the layer resolution. More...

boolean	usesDefaultProgram ()

Static Public Member Functions
static ScrollbarLayer	create (LayerRenderer renderer, boolean vertical)

Static Public Attributes
static final long	FADE_DELAY = 500

Private Member Functions
	ScrollbarLayer (LayerRenderer renderer, CairoImage image, boolean vertical, ByteBuffer buffer)

void	createProgram ()

void	activateProgram ()

void	deactivateProgram ()

RectF	getVerticalRect (RenderContext context)

RectF	getHorizontalRect (RenderContext context)

Private Attributes
final boolean	mVertical

final Bitmap	mBitmap

final Canvas	mCanvas

float	mOpacity

LayerRenderer	mRenderer

int	mProgram

int	mPositionHandle

int	mTextureHandle

int	mSampleHandle

int	mTMatrixHandle

int	mOpacityHandle

Static Private Attributes
static String	LOGTAG = LayerView.class.getName()

static final float	FADE_AMOUNT = 0.03f

static final int	PADDING = 1

static final int	BAR_SIZE = 6

static final int	CAP_RADIUS = (BAR_SIZE / 2)

static final String	FRAGMENT_SHADER

static final float	TEX_HEIGHT = 8.0f

static final float	TEX_WIDTH = 8.0f

static final float[]	BODY_TEX_COORDS

static final float[]	TOP_CAP_TEX_COORDS

static final float[]	BOT_CAP_TEX_COORDS

static final float[]	LEFT_CAP_TEX_COORDS

static final float[]	RIGHT_CAP_TEX_COORDS

Additional Inherited Members
Protected Member Functions inherited from org.mozilla.gecko.gfx.TileLayer
boolean	repeats ()

boolean	stretches ()

int	getTextureID ()

boolean	initialized ()

void	finalize () throws Throwable

void	performUpdates (RenderContext context)
	Subclasses may override this method to perform custom layer updates. More...

Protected Member Functions inherited from org.mozilla.gecko.gfx.Layer
RectF	getBounds (RenderContext context)
	Given the intrinsic size of the layer, returns the pixel boundaries of the layer rect. More...

boolean	inTransaction ()
	Returns true if the layer is currently in a transaction and false otherwise. More...

void	performUpdates (RenderContext context)
	Subclasses may override this method to perform custom layer updates. More...

final void	fillRectCoordBuffer (float[] dest, RectF rect, float viewWidth, float viewHeight, Rect cropRect, float texWidth, float texHeight)
	This function fills in the provided `dest` array with values to render a texture. More...

Protected Attributes inherited from org.mozilla.gecko.gfx.TileLayer
final CairoImage	mImage

Protected Attributes inherited from org.mozilla.gecko.gfx.Layer
Rect	mPosition

float	mResolution

boolean	mUsesDefaultProgram = true

Detailed Description

Draws a small rect.

This is scaled to become a scrollbar.

Definition at line 26 of file ScrollbarLayer.java.

Constructor & Destructor Documentation

◆ ScrollbarLayer()

org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer	(	LayerRenderer	renderer,
		CairoImage	image,
		boolean	vertical,
		ByteBuffer	buffer
	)

inlineprivate

Definition at line 109 of file ScrollbarLayer.java.

References Bitmap, org.mozilla.gecko.gfx.ScrollbarLayer.CAP_RADIUS, Color, org.mozilla.gecko.gfx.CairoImage.getSize(), org.mozilla.gecko.gfx.ScrollbarLayer.mBitmap, org.mozilla.gecko.gfx.ScrollbarLayer.mCanvas, org.mozilla.gecko.gfx.ScrollbarLayer.mRenderer, org.mozilla.gecko.gfx.ScrollbarLayer.mVertical, org.mozilla.gecko.gfx.TileLayer.PaintMode.NORMAL, Paint, and size.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.create().

Member Function Documentation

◆ activateProgram()

void org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram ( )

inlineprivate

Definition at line 159 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.LayerRenderer.DEFAULT_TEXTURE_MATRIX, org.mozilla.gecko.gfx.ScrollbarLayer.mOpacity, org.mozilla.gecko.gfx.ScrollbarLayer.mOpacityHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mPositionHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mProgram, org.mozilla.gecko.gfx.ScrollbarLayer.mSampleHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mTextureHandle, and org.mozilla.gecko.gfx.ScrollbarLayer.mTMatrixHandle.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ create()

static ScrollbarLayer org.mozilla.gecko.gfx.ScrollbarLayer.create	(	LayerRenderer	renderer,
		boolean	vertical
	)

inlinestatic

Definition at line 130 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.ScrollbarLayer.BAR_SIZE, org.mozilla.gecko.gfx.CairoImage.FORMAT_ARGB32, imageSize(), org.mozilla.gecko.gfx.IntSize.nextPowerOfTwo(), and org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

Referenced by org.mozilla.gecko.gfx.LayerRenderer.LayerRenderer().

◆ createProgram()

void org.mozilla.gecko.gfx.ScrollbarLayer.createProgram ( )

inlineprivate

Definition at line 140 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.LayerRenderer.DEFAULT_VERTEX_SHADER, org.mozilla.gecko.gfx.ScrollbarLayer.FRAGMENT_SHADER, org.mozilla.gecko.gfx.LayerRenderer.loadShader(), org.mozilla.gecko.gfx.ScrollbarLayer.mOpacityHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mPositionHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mProgram, org.mozilla.gecko.gfx.ScrollbarLayer.mSampleHandle, org.mozilla.gecko.gfx.ScrollbarLayer.mTextureHandle, and org.mozilla.gecko.gfx.ScrollbarLayer.mTMatrixHandle.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ deactivateProgram()

void org.mozilla.gecko.gfx.ScrollbarLayer.deactivateProgram ( )

inlineprivate

Definition at line 175 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.ScrollbarLayer.mPositionHandle, and org.mozilla.gecko.gfx.ScrollbarLayer.mTextureHandle.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ draw()

void org.mozilla.gecko.gfx.ScrollbarLayer.draw ( RenderContext context )

inline

Subclasses override this function to draw the layer.

Reimplemented from org.mozilla.gecko.gfx.Layer.

Definition at line 213 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.LayerRenderer.Frame.drawForeground().

◆ fade()

boolean org.mozilla.gecko.gfx.ScrollbarLayer.fade ( )

inline

Decrease the opacity of the scrollbar by one frame's worth.

Return true if the opacity was decreased, or false if the scrollbars are already fully faded out.

Definition at line 186 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.Layer.beginTransaction(), org.mozilla.gecko.gfx.Layer.endTransaction(), org.mozilla.gecko.gfx.ScrollbarLayer.FADE_AMOUNT, org.mozilla.gecko.util.FloatUtils.fuzzyEquals(), Math, and org.mozilla.gecko.gfx.ScrollbarLayer.mOpacity.

Referenced by org.mozilla.gecko.gfx.LayerRenderer.Frame.beginDrawing().

◆ getHorizontalRect()

RectF org.mozilla.gecko.gfx.ScrollbarLayer.getHorizontalRect ( RenderContext context )

inlineprivate

Definition at line 437 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.ScrollbarLayer.BAR_SIZE, bottom, org.mozilla.gecko.gfx.ScrollbarLayer.CAP_RADIUS, middle, org.mozilla.gecko.gfx.ScrollbarLayer.PADDING, org.mozilla.gecko.gfx.Layer.RenderContext.pageRect, and org.mozilla.gecko.gfx.Layer.RenderContext.viewport.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ getVerticalRect()

RectF org.mozilla.gecko.gfx.ScrollbarLayer.getVerticalRect ( RenderContext context )

inlineprivate

Definition at line 424 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.ScrollbarLayer.BAR_SIZE, org.mozilla.gecko.gfx.ScrollbarLayer.CAP_RADIUS, middle, org.mozilla.gecko.gfx.ScrollbarLayer.PADDING, org.mozilla.gecko.gfx.Layer.RenderContext.pageRect, right, and org.mozilla.gecko.gfx.Layer.RenderContext.viewport.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ unfade()

boolean org.mozilla.gecko.gfx.ScrollbarLayer.unfade ( )

inline

Restore the opacity of the scrollbar to fully opaque.

Return true if the opacity was changed, or false if the scrollbars are already fully opaque.

Definition at line 201 of file ScrollbarLayer.java.

References org.mozilla.gecko.gfx.Layer.beginTransaction(), org.mozilla.gecko.gfx.Layer.endTransaction(), org.mozilla.gecko.util.FloatUtils.fuzzyEquals(), and org.mozilla.gecko.gfx.ScrollbarLayer.mOpacity.

Referenced by org.mozilla.gecko.gfx.LayerRenderer.Frame.beginDrawing().

Member Data Documentation

◆ BAR_SIZE

final int org.mozilla.gecko.gfx.ScrollbarLayer.BAR_SIZE = 6

staticprivate

Definition at line 32 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.create(), org.mozilla.gecko.gfx.ScrollbarLayer.draw(), org.mozilla.gecko.gfx.ScrollbarLayer.getHorizontalRect(), and org.mozilla.gecko.gfx.ScrollbarLayer.getVerticalRect().

◆ BODY_TEX_COORDS

final float [] org.mozilla.gecko.gfx.ScrollbarLayer.BODY_TEX_COORDS

staticprivate

Initial value:

= {
        
        CAP_RADIUS/TEX_WIDTH, CAP_RADIUS/TEX_HEIGHT,
        CAP_RADIUS/TEX_WIDTH, (CAP_RADIUS+1)/TEX_HEIGHT,
        (CAP_RADIUS+1)/TEX_WIDTH, CAP_RADIUS/TEX_HEIGHT,
        (CAP_RADIUS+1)/TEX_WIDTH, (CAP_RADIUS+1)/TEX_HEIGHT
    }

Definition at line 65 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ BOT_CAP_TEX_COORDS

final float [] org.mozilla.gecko.gfx.ScrollbarLayer.BOT_CAP_TEX_COORDS

staticprivate

Initial value:

= {
        
        0                 , 1.0f - BAR_SIZE/TEX_HEIGHT,
        0                 , 1.0f - CAP_RADIUS/TEX_HEIGHT,
        BAR_SIZE/TEX_WIDTH, 1.0f - BAR_SIZE/TEX_HEIGHT,
        BAR_SIZE/TEX_WIDTH, 1.0f - CAP_RADIUS/TEX_HEIGHT
    }

Definition at line 83 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ CAP_RADIUS

final int org.mozilla.gecko.gfx.ScrollbarLayer.CAP_RADIUS = (BAR_SIZE / 2)

staticprivate

Definition at line 33 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw(), org.mozilla.gecko.gfx.ScrollbarLayer.getHorizontalRect(), org.mozilla.gecko.gfx.ScrollbarLayer.getVerticalRect(), and org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

◆ FADE_AMOUNT

final float org.mozilla.gecko.gfx.ScrollbarLayer.FADE_AMOUNT = 0.03f

staticprivate

Definition at line 29 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.fade().

◆ FADE_DELAY

final long org.mozilla.gecko.gfx.ScrollbarLayer.FADE_DELAY = 500

static

Definition at line 28 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.LayerRenderer.Frame.beginDrawing().

◆ FRAGMENT_SHADER

final String org.mozilla.gecko.gfx.ScrollbarLayer.FRAGMENT_SHADER

staticprivate

Initial value:

=
        "precision mediump float;\n" +
        "varying vec2 vTexCoord;\n" +
        "uniform sampler2D sTexture;\n" +
        "uniform float uOpacity;\n" +
        "void main() {\n" +
        "    gl_FragColor = texture2D(sTexture, vec2(vTexCoord.x, 1.0 - vTexCoord.y));\n" +
        "    gl_FragColor.a *= uOpacity;\n" +
        "}\n"

Definition at line 49 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.createProgram().

◆ LEFT_CAP_TEX_COORDS

final float [] org.mozilla.gecko.gfx.ScrollbarLayer.LEFT_CAP_TEX_COORDS

staticprivate

Initial value:

= {
        
        0                   , 1.0f - BAR_SIZE/TEX_HEIGHT,
        0                   , 1.0f,
        CAP_RADIUS/TEX_WIDTH, 1.0f - BAR_SIZE/TEX_HEIGHT,
        CAP_RADIUS/TEX_WIDTH, 1.0f
    }

Definition at line 92 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ LOGTAG

String org.mozilla.gecko.gfx.ScrollbarLayer.LOGTAG = LayerView.class.getName()

staticprivate

Definition at line 27 of file ScrollbarLayer.java.

◆ mBitmap

final Bitmap org.mozilla.gecko.gfx.ScrollbarLayer.mBitmap

private

Definition at line 36 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

◆ mCanvas

final Canvas org.mozilla.gecko.gfx.ScrollbarLayer.mCanvas

private

Definition at line 37 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

◆ mOpacity

float org.mozilla.gecko.gfx.ScrollbarLayer.mOpacity

private

Definition at line 38 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.fade(), and org.mozilla.gecko.gfx.ScrollbarLayer.unfade().

◆ mOpacityHandle

int org.mozilla.gecko.gfx.ScrollbarLayer.mOpacityHandle

private

Definition at line 46 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.createProgram().

◆ mPositionHandle

int org.mozilla.gecko.gfx.ScrollbarLayer.mPositionHandle

private

Definition at line 42 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.createProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.deactivateProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ mProgram

int org.mozilla.gecko.gfx.ScrollbarLayer.mProgram

private

Definition at line 41 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.createProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ mRenderer

LayerRenderer org.mozilla.gecko.gfx.ScrollbarLayer.mRenderer

private

Definition at line 40 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw(), and org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

◆ mSampleHandle

int org.mozilla.gecko.gfx.ScrollbarLayer.mSampleHandle

private

Definition at line 44 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.createProgram().

◆ mTextureHandle

int org.mozilla.gecko.gfx.ScrollbarLayer.mTextureHandle

private

Definition at line 43 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.createProgram(), org.mozilla.gecko.gfx.ScrollbarLayer.deactivateProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ mTMatrixHandle

int org.mozilla.gecko.gfx.ScrollbarLayer.mTMatrixHandle

private

Definition at line 45 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.activateProgram(), and org.mozilla.gecko.gfx.ScrollbarLayer.createProgram().

◆ mVertical

final boolean org.mozilla.gecko.gfx.ScrollbarLayer.mVertical

private

Definition at line 35 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw(), and org.mozilla.gecko.gfx.ScrollbarLayer.ScrollbarLayer().

◆ PADDING

final int org.mozilla.gecko.gfx.ScrollbarLayer.PADDING = 1

staticprivate

Definition at line 31 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.getHorizontalRect(), and org.mozilla.gecko.gfx.ScrollbarLayer.getVerticalRect().

◆ RIGHT_CAP_TEX_COORDS

final float [] org.mozilla.gecko.gfx.ScrollbarLayer.RIGHT_CAP_TEX_COORDS

staticprivate

Initial value:

= {
        
        CAP_RADIUS/TEX_WIDTH, 1.0f - BAR_SIZE/TEX_HEIGHT,
        CAP_RADIUS/TEX_WIDTH, 1.0f,
        BAR_SIZE/TEX_WIDTH  , 1.0f - BAR_SIZE/TEX_HEIGHT,
        BAR_SIZE/TEX_WIDTH  , 1.0f
    }

Definition at line 101 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

◆ TEX_HEIGHT

final float org.mozilla.gecko.gfx.ScrollbarLayer.TEX_HEIGHT = 8.0f

staticprivate

Definition at line 60 of file ScrollbarLayer.java.

◆ TEX_WIDTH

final float org.mozilla.gecko.gfx.ScrollbarLayer.TEX_WIDTH = 8.0f

staticprivate

Definition at line 61 of file ScrollbarLayer.java.

◆ TOP_CAP_TEX_COORDS

final float [] org.mozilla.gecko.gfx.ScrollbarLayer.TOP_CAP_TEX_COORDS

staticprivate

Initial value:

= {
        
        0                 , 1.0f - CAP_RADIUS/TEX_HEIGHT,
        0                 , 1.0f,
        BAR_SIZE/TEX_WIDTH, 1.0f - CAP_RADIUS/TEX_HEIGHT,
        BAR_SIZE/TEX_WIDTH, 1.0f
    }

Definition at line 74 of file ScrollbarLayer.java.

Referenced by org.mozilla.gecko.gfx.ScrollbarLayer.draw().

The documentation for this class was generated from the following file:

ScrollbarLayer.java

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ScrollbarLayer()

Member Function Documentation

◆ activateProgram()

◆ create()

◆ createProgram()

◆ deactivateProgram()

◆ draw()

◆ fade()

◆ getHorizontalRect()

◆ getVerticalRect()

◆ unfade()

Member Data Documentation

◆ BAR_SIZE

◆ BODY_TEX_COORDS

◆ BOT_CAP_TEX_COORDS

◆ CAP_RADIUS

◆ FADE_AMOUNT

◆ FADE_DELAY

◆ FRAGMENT_SHADER

◆ LEFT_CAP_TEX_COORDS

◆ LOGTAG

◆ mBitmap

◆ mCanvas

◆ mOpacity

◆ mOpacityHandle

◆ mPositionHandle

◆ mProgram

◆ mRenderer

◆ mSampleHandle

◆ mTextureHandle

◆ mTMatrixHandle

◆ mVertical

◆ PADDING

◆ RIGHT_CAP_TEX_COORDS

◆ TEX_HEIGHT

◆ TEX_WIDTH

◆ TOP_CAP_TEX_COORDS