Fixed blur being too faint by fixing the weight to correctly match the
amount of pixels being sampled based on the blur radius, and by not
multiplying and flooring to int inside the sampling loop which leads to
excessive rounding down errors.

The "half" value in the previous implementation was also wrong due to
using integer division instead of floating point division, which caused
the blur being slightly offset down and to the right.

By not calling scanLine() and constScanline() repeatedly and by only
applying the weight once in the single-weight case we can also gain a
slight performance improvement.

Also, make sure blur radii below 2 don't get floored to 0.

Change-Id: Ibe15d0f51c919594b168923485c051d21f8d7822
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

If the item being rendered didn't have a bounding rect starting in the
origin the shadow path would be get an additional offset equal to the
distance of the item from the origin. Also, the stroke's shadow did not
take the pen width into account, causing clipping artifacts.

Combine all the common shadow generating code into a single function,
and avoid rendering into an intermediate image that is then blitted into
a larger image.

Task-number: QTBUG-30914
Change-Id: I16c7c15897ab8e2d46f37da835f75f97fe680863
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

Change-Id: I6c3bd7bebe3d62d1cfd0fa6334544c9db8398c76
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

Change copyrights and license headers from Nokia to Digia

Change-Id: Ie7f5d49ed8235d7a7845ab68f99ad1c220e64d5c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1. Use QQuickContext2DRenderThread for Threaded rendering
2. Make FBO target works with all render strategies
3. Remove some unnessary locks, call texture methods by invoking meta calls
4. Run existing tests with all render targets and strategies (except Cooperative)

Change-Id: I0db5c91d848b86bcc1536c30d7a5804b66a817f1
Reviewed-by: Yunqiao Yin <charles.yin@nokia.com>

We need to be able to compile without RTTI support. Fortunately
QPaintEngine has built-in type info. No RTTI support is the
default configuration on Windows with MSVC2010, so this is
required to fix the build there.

Change-Id: I89b1ed4879fd0e8e0d61ef12d77f6961fd0b07e5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Yunqiao Yin <charles.yin@nokia.com>

1. QQuickPixmap now only store textures instead of QImage data, however
context2d still need to access the QImage in some places, so cache the
loaded images to avoid the expensive GL readback operations.
2. Use texture directly if the render target is FBO.

Change-Id: I6228011e5698fa00f2e3420a3a4a305995b8a238
Reviewed-by: Yunqiao Yin <charles.yin@nokia.com>

If canvas' render target is FramebufferObject, only the first drawImage() call
was successful, it could be fixed by adding beginNativePainting() and endNativePainting(),
but this could be unexpected behavior with OpenGL paint engine.

task-number: QTBUG-23595
Change-Id: Iff70fc88f6d39655dd283fa5dde3365887910460
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>

After calling transform related methods, the current path should be transformed with the same method but in reversal mode.
So that during painting, the painter will apply the CTM to this path again, otherwise path will be transformed twice.

Change-Id: I7e12bdff82dabb408f47152ba07b608872d4093f
Task-number: QTBUG-24988
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>

Symbols beginning with QDeclarative are already exported
by the quick1 module.

Users can apply the bin/rename-qtdeclarative-symbols.sh
script to modify client code using the previous names of the
renamed symbols.

Task-number: QTBUG-23737
Change-Id: Ifaa482663767634931e8711a8e9bf6e404859e66
Reviewed-by: Martin Jones <martin.jones@nokia.com>

As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.

Change-Id: If39bd256b0fa85eba17ea30f8ab87ea27d758908
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

Replace Nokia contact email address with Qt Project website.

Change-Id: I6a730abc0c396fb545a48b2d6938abedac2e3f1c
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

Update copyright headers from before 2011, and a couple of new ones that
were merged after the previous change to copyright headers.

Change-Id: Ia76e08e2734afa4ef3f1207dbcda5ff3bc81b366
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

Avoid pass painting state by value.

Change-Id: I86529ee7357b6cadbaa941b296d7ad025977f2aa
Reviewed-by: Martin Jones <martin.jones@nokia.com>

The QSG (SceneGraph) prefix is too generic for
Qt Quick(2)-specific classes.

All the classes and files in the declarative/items
directory have been renamed.

In particular, for classes that are currently public,
the renaming is as follows:

QSGView --> QQuickView
QSGCanvas --> QQuickCanvas
QSGItem --> QQuickItem
QSGPaintedItem --> QQuickPaintedItem

The header files have been renamed accordingly
(e.g. qsgview.h --> qquickview.h).

Change-Id: Iac937fff81db20bb639486a793c3aeb5230b038c
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>

Potentially severe:
- Fix int/bool mismatches
- Use of uninitialized variable
- Do connectionMask shift operations in 64bit
- Enum type mismatch for QLineControl::EchoMode

Various:
- class/struct mismatches
- UnhandledEnumeration values
- Unused variables
- Constructor initialization order

Change-Id: Ieb52f8990445fe95f94070175a0f9beb66863240
Reviewed-by: Martin Jones <martin.jones@nokia.com>

(This commit is in preparation of moving several files
to a separate library (QtQuick2).)

Don't add all subfolders to the includepath (from the
.pri files). There's no good reason to do that.

For headers (both public and private) that are in the
same folder as the file that includes them, prefer to use

 #include "foo.h"
 #include "bar_p.h"

For public headers that are outside the current folder
but have "unambiguous" names (e.g. qdeclarative prefix), use

 #include <foo.h>

For private headers that are outside the current folder, use

 #include <private/baz_p.h>

Also change

 #include <QtDeclarative/private/foo_p.h>

to

 #include <private/foo_p.h>

The header filenames already have a qdeclarative or qsg
prefix; there's no need to prefix by module name to
disambiguate.

Finally,

 #include "private/foo_p.h"

should be avoided. private/ is used for auto-generated
(forwarding) headers, which never reside in the current
(source) directory. Use angle brackets instead.

Change-Id: I04f8477fdba043546064ee276475c09dc373f8f2
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>

Change-Id:I5fc11a5874d55ad423dc1fb9c3e1b75a38003465
Reviewed-on: http://codereview.qt-project.org/5962


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Charles Yin <charles.yin@nokia.com>

Change-Id: Icbbc7f2a0fe3b908963ce18afef51e25ea0170a0
Reviewed-on: http://codereview.qt-project.org/5805


Reviewed-by: Charles Yin <charles.yin@nokia.com>

Change-Id: Ia57e4f14d94ad63194dad52892bedf316a58a79a
Reviewed-on: http://codereview.qt-project.org/5693


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
Reviewed-by: Aaron Kennedy <aaron.kennedy@nokia.com>

Change-Id: If145f1d02566f839abeb50df167db2b237499290
Reviewed-on: http://codereview.qt-project.org/4857


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Charles Yin <charles.yin@nokia.com>

Change-Id: I5a30f8c45e21344060ea6e61d440d6fea822f9de

1.Supports tiled canvas with canvasSize, tileSize and canvasWindow
2.Supports different rendering targets: Canvas.Image and
  Canvas.FrameBufferObject by renderTarget property
3.Supports thread rendering when possible by threadRendering property.
4.Refactors QSGContext2D code, move some logic to
  QSGContext2DCommandBuffer,QSGContext2DTexture,QSGContext2DTile, etc
5.Updates/adds some canvas examples
6.Some improvements for context2d API
   6.1 drawImage() now loads image asynchoronously and draw images
       automatically when they are ready
   6.2 adds fillRule supports
   6.3 add svg path supports
   6.4 Pixel operations (getImageData/putImageData/createImageData)
       now have better performance by using V8 indexed array accessors
   6.5 Uses QTransform instead of QMatrix
   6.6 Gradients/patterns now are V8 values, not QObjects
   6.7 Supports measureText and TextMetrics interface
   6.8 Gives not support warnings for unimplemented functions
       (drawFocusRing,setCaretSelectionRect,caretBlinkRate)
   6.9 Better error handling, throw standard DOM exceptions according
       to the HTML5 context2d spec.
   6.10 Adds shear, resetTransform to matrix operations
   6.11 Adds roundedRect, ellipse, text to path operations
   6.12 Adds new features to CanvasImageData interface
      1) adds mirror() function
      2) adds filter() function, include the following filters:
          Threshold
          GrayScale
          Brightness
          Invert
          Blur
          Blend
          Opaque
          Convolute
7. Adds documentations

Change-Id: Id19224260d6a3fdc589d1f9681c34a88a7e7b3e5
Reviewed-on: http://codereview.qt-project.org/3621


Reviewed-by: Charles Yin <charles.yin@nokia.com>