Paint.NET 4.1.5

* Changes:
- Move Selected Pixels tool performance has been significantly optimized.
- Move Selected Pixels tool was always leaving transparent black behind instead of the secondary color with alpha removed.
- Brush tools with odd-sized brushes and no antialiasing were drawing at 1 size smaller.
- Fixed some apparent ‘lag’ in the brush tools due to an off-by-1 glitch in the stroke path calculation code.
- The brush tool preview circle no longer scales by the system DPI setting, which made it too big.
- Removed the momentary hourglass/wait cursor after drawing (e.g. pencil and brush tools).
- Optimized performance of the Shapes tool, especially for the Ellipse shape.
- Paint Bucket tool will now correctly treat the selection as a boundary contour.
- Zoom tool no longer crashes sometimes when pressing the right mouse button while already holding the left mouse button.
- The status bar now reports the correct selection location when it’s outside the image boundaries (e.g. negative values).
- Auto-scrolling on the edge of the window now works correctly and doesn’t require you to "jiggle the mouse" for each scroll update.
- Touch screens no longer scroll when swiping up/down with one finger.
- Improved the pixel grid’s contrast so it’s not overwhelmingly bright.
- The transparency "checkerboard" is now aligned to the top-left of the image, instead of the top-left of the canvas.
- The cursor position reported in the status bar was off-by-1 when the value was supposed to be negative.
- Some controls (e.g. units selection in the Image->Resize dialog) were not drawing focus rectangles when using the keyboard.
- Fixed a crash (OutOfMemoryException) when using a selection tool when hardware acceleration is disabled.
- Fixed a crash (TimeBeforeLastUpdateException) in the installer. This usually happens when running in a virtual machine, and only affects animations.
- Fixed a crash (BadImageFormatException) at startup. This indicates an installation error, and will be automatically repaired.
- Fixed various crashes caused by having the wrong (old) version of PaintDotNet.SystemLayer.Native.dll. This indicates an installation error, and will be automatically repaired.
- Improved performance when software rendering is used (e.g. when hardware accelerated rendering is disabled).
- All 7th generation Intel GPUs now default to hardware rendering. All older Intel GPUs default to software rendering.
- Fixed graphical artifacts (blackness, flickering, mouse trails) on certain GPUs (e.g. NVIDIA Optimus).
- NVIDIA ION graphics cards now default to software rendering due to crashes.
- Fixed an issue that was causing beta updates to be offered even if “Also check for pre-release (beta) versions of paint.net” was disabled in Settings

* Performance
- A brand new, asynchronous, fully multithreaded rendering engine allows performance to scale very well with respect to the number of CPU cores whether you have 2, 4, 6, or even 16 of them.
- The responsiveness of the user interface has been greatly improved, especially when working with large images.
- Memory usage is lower.
- Improved battery life impact due to fixing the way the floating windows manage their transparency.
- Startup performance when many plugins are installed is improved
* Selections
- Selections are now antialiased, which greatly improves the quality around the edges of selected content. You can turn this on and off at any time from the toolbar.
- Everything related to selections now has much higher performance and greatly reduced CPU usage, especially if hardware acceleration (GPU) is enabled.
- The selection outline is now rendered using the “dancing ants” animation, which greatly improves the contrast between it and the image itself.
* General
- The functionality previously provided by the Utilities, Window, and Help menus has been simplified, consolidated, and moved to the top-right corner of the main window.
- The image thumbnail list has been moved up 1 row so that it no longer intrudes into the current Tool’s toolbar space. This means it will no longer “jump around” when you switch between tools. This also means that it is aligned to the top of the monitor when the main window is maximized, making it easier to click on images (Fitt’s law).
- The image thumbnail list can now be reordered with drag-and-drop.
- A brand new Settings dialog makes it much easier to configure all the tool and toolbar defaults, among other things.
- The zoom slider and units selector have been moved from the toolbar to the bottom right corner of the window (into the status bar).
- Each image now shows up as its own taskbar item. This can be disabled in the Settings dialog with “Show image previews in the Windows taskbar.”
- Layers can now be reordered with drag-and-drop.
- Ctrl+Click on the Move Layer Up/Down buttons will now move a layer to the top/bottom, respectively.
- Improved quality of Image->Resize.
- Edit –> Copy Merged will copy all layers to the clipboard without having to use Image->Flatten first.
- Copying to the clipboard now includes the “PNG” format, which allows transparency to survive from many popular applications (e.g. Office)
- You can now use the middle mouse button to scroll/pan the image at any time (same functionality as holding down the spacebar along with clicking and dragging the mouse).
- Shift+Backspace will now fill the selection with the secondary color (Backspace, the shortcut key for Edit -> Fill Selection, still fills with primary color as usual).
- paint.net now shows up in Windows’ “Default Programs” control panel so you can configure its file type associations without reinstalling.
- EXIF rotation metadata is now applied when opening images (e.g. JPG taken with a rotated camera).
- Eleven (11) new languages, bringing the total to 21: Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English,Finnish, French, German, Hindi, Hungarian, Italian, Japanese, Korean,Lithuanian, Persian, Polish, Portuguese (Brazilian), Portuguese (Portugal), Russian, and Spanish.
- Crash logs are now stored in%LOCALAPPDATA%paint.netCrashLogs (e.g. C:UsersusernameAppDataLocalpaint.netCrashLogs) instead of on the desktop.
* Effects
- New effect: Photo -> Vignette.
- Improved the quality of the Photo -> Red Eye Removal effect.
- Improved UI for Layers -> Rotate/Zoom.
- Effect plugins now show up with a jigsaw puzzle icon next to them in the menus. You can hover over the effect to see information about it, including the author and location of its DLL.
- Errors while loading effect plugins are now displayed in the Settings dialog.
* Tools
- Most Tools now support “fine-grained history.” You may adjust the properties of what you’ve drawn (e.g. colors, toolbar settings) before committing to the layer (use the “Finish” button or press Enter), and each change is tracked in the history.
- Tools may now draw directly with a blending mode, configurable from the toolbar. All of the layer blending modes are supported, as well as “Overwrite.”
- Drawing tools (Pencil, Paintbrush, Eraser, Clone Stamp, Recolor) now have much smoother mouse input handling via GetMouseMovePointsEx.
- Brush tools (Paintbrush, Eraser, Clone Stamp, Recolor) now have soft brushes support via a “Hardness” setting in the toolbar.
- The Move tools (Move Selected Pixels, Move Selection) have a much better UI for scaling, moving, and (especially) rotation.
- The Move tools now support moving the rotation anchor, which changes the center of rotation.
- The new Shapes tool replaces the Rectangle, Rounded Rectangle, Ellipse, and Freeform shape tools. 27 shapes are currently available. You may move, resize, and rotate a shape, as well as reconfigure any other properties from the toolbar (color, outline size, etc.) before committing it to the layer.
- Color Picker has a configurable sampling radius, and can sample from either the current layer or the whole image.
- Gradient tool now supports a new Spiral gradient type and allows configuration of the repeat mode (none, repeat, wrapped).
- Gradient tool has improved rendering quality via dithering and antialiasing. You can control both of these with the standard antialiasing toggle in the toolbar.
- Magic Wand and Paint Bucket now allow live adjustment of Tolerance and the Origin (click location) after clicking (press Enter to commit/finish).
- Magic Wand and Paint Bucket can now sample from either the current layer or the whole image.
- Paint Bucket tool now supports anti-aliasing.
- Recolor tool can now use the color of the pixel where you click as the color to be replaced. Or, as usual, it can use the secondary color.
- Text tool now supports multiple rendering modes: Smooth, Sharp (Modern), and Sharp (Classic). These correspond to DirectWrite rendering modes of Outline, ClearType Natural Symmetric, and GDI Classic, respectively.
- Text tool now supports colored fonts on Windows 8.1.

* Changes:
- Pasting with the Text tool should no longer hide the move handle
- The rotation anchor (Move, Shapes) is now less intrusive
- Fixed focus rectangles in some controls that effects use (check boxes, radio buttons, sliders)
- Fixed a layout issue with the ruler in some very specific scenarios
- Hardware acceleration is now enabled by default for some Intel GPUs (e.g. Intel HD 4000 series)

- Significantly improved performance of the Ellipse shape
- Fixed the selection outline being drawn in the wrong location when zoomed in
- Fixed a glitch in the Line/Curve tool
- Fixed a rendering glitch and crash in the Move Selected Pixels tool
- Fixed a crash when attempting to draw a shape with zero width and/or zero height
- Updated installer to use .NET 4.5.2
- Fixed a problem that was preventing the installer from working with certain McAfee antivirus configurations (MsiOpenDatabaseW error 110)
- New language: Persian
- New language: Danish

The following changes have been made in this version of Paint.Net:
- The Line/Curve tool is now back, and the Line and Curve shapes have been removed from the Shapes tool
- Improved rendering quality of the Line/Curve tool, especially when antialiasing is disabled
- Rectangle and Rounded Rectangles shapes now draw using an "inset" brush stroke. This helps prevents blurriness with odd-sized brush widths
- Shapes tool now lets you commit by clicking outside of the bounding box of the current shape. (you can also start drawing a new shape via clicking and dragging, of course)
- Improved rendering quality of brush tools when antialiasing is disabled
- Improved performance of Shapes and Line/Curve tools on most systems (e.g., less than 8 CPU cores)
- Improved rendering quality of Image->Resize when using Nearest Neighbor
- Fixed the Palette chooser in the Colors window, which was going away when you tried to move the mouse to click on one of its items
- Fixed some broken clipping when using Paste and "Expand Canvas"
- Intel-based GPUs now default to having hardware acceleration disabled. You may still force it to be enabled from the Settings dialog.
- When pasting, the PNG format now has a higher priority than CF_DIB, which allows easier access to transparency (alpha) from other applications
- Tools no longer incorrectly commit when clicking on the currently active layer in the Layers window
- The layer's opacity was being ignored while drawing if it was the lowest (index zero) layer
- You can now copy a file from File Explorer and Paste it into Paint.NET (regression from 3.5)
- Fixed the canvas scroll bars occasionally being incorrect after maximizing the main window and then restoring it
- Fixed radio button group tab processing
- Fixed many small miscellaneous crashes
- New language: Czech

- Rotation (Move, Shapes) now allows you to use the right mouse button to rotate, no matter where the mouse cursor is
- The hit-zone for rotation no longer extends inside the object's (e.g. selection, shape) bounding box
- New languages: Hungarian, Lithuanian
- Fixed some mouse input glitches when using Paint.NET inside of VMWare
- Fixed all sorts of issues with Paste
- Fixed blending modes sometimes getting saved incorrectly
- Fixed an infinite loop with the crash dialog handling
- Fixed constrained rotation (e.g. Move, Shapes) using a relative instead of absolute offset
- Fixed a rendering issue with the Move Selected Pixels tool caused by a flawed implementation of coverage sampling
- Fixed an issue in the Magic Wand and Paint Bucket tools when using a Tolerance value of 0 whereby it would sometimes include colors that weren't exactly the same as what you clicked on
- Fixed a crash when using horizontal scroll wheels
- Fixed the Settings dialog showing the wrong language
- Fixed the increment for Pan/Zoom in the Rotate/Zoom dialog (it was 1.0, it is now 0.01)
- Fixed the Rotate/Zoom dialog not always reloading the values that were used previously
- Fixed the Pixel Grid indicators (View menu, toolbar) being out of sync
- Fixed various plugin compatibility issues
- Fixed various crashes

- Added new languages: Dutch, Finnish, Polish, Portuguese (Portugal)
- Fixed many typos and clumsy translations in various languages
- Fixed the main window growing taller and flashing black after being minimized and then restored
- Fixed the tools committing their changes to the image when trying to exit the application (waste of CPU/disk)
- Fixed the current layer not being preserved when using one of the Image -> Rotate commands
- Fixed keyboard shortcuts not working in some cases if the mouse was positioned over the toolbar
- Fixed some inappropriate text wrapping in drop down boxes in German (the text is now clipped with "..." instead)
- Fixed the Recolor tool's shortcut mistakenly being 'e' instead of 'r'
- Pressing 'A' now cycles through the shapes when the Shapes tool is active (Shift+A cycles backward)
- Fixed mouse input centering for the brush tools when antialiasing was disabled
- Re-enabled Ctrl+D as a "commit" button
- Moved the "Finish" button (green checkmark) to the end of the toolbar and included the "Finish" text so that it is easier to aim at
- Fixed some font previews rendering as gray instead of black
- Fixed a crash that was most easily reproducible by copying an image from IE11 and then clicking on File->New Image
- Image close buttons are now appropriately styled on Windows 7
- Fixed a dangling progress bar after running some effects
- Fixed some drifting color value problems in the Colors window when changing Hue, Saturation, and/or Value
- Fixed a crash caused by 3rd-party visual themes that try to use fonts that don't exist
- Fixed a crash when toggling a layer's visibility while using the Move Selected Pixels tool and then undoing
- Fixed a crash when opening an image due to not being able to create the thumbnail for the File -> Open Recent list
- Fixed a crash on startup due to the user's My Documents folder not existing
- Changed the canvas background color to gray when using the Blue theme
- Fixed an error whereby committing an action, changing the active layer, undoing, and then redoing would cause the action to be redone on the new layer instead of the one it was originally drawn on
- Fixed shortcut keys not working for toggling line styles and caps for the Shapes tool
- Fixed some styling issues in the Settings dialog in the Tools section
- Fixed some delayed crashes with some effect plugins which would happen when trying to do an action afterward
- Fixed a crash caused by pressing Escape while drawing a shape
- Fixed many plugin compatibility and crash issues

- Added a "Finish" (aka commit) button in the toolbar. It looks like a green check mark. This makes it much easier to discover how you finish a shape and then draw another one, for instance. Most of the non-brush tools support this (e.g. Move, Gradient, Magic Wand, Paint Bucket, Text).
- Added a choice between Light and Blue color schemes to Settings. The default on Windows 8/8.1 is Light, and the default on Windows 7 is Blue.
- Fixed some artifacts in the Magic Wand when making a "Global" selection
- Fixed a crash in the Magic Wand tool that was causing people a lot of grief ("this.baseGeometry == null")
- Fixed a crash in various tools (crash in ClickDragBehavior.cs line 270)
- Fixed brush strokes being completely erratic over Remote Desktop
- Fixed some very broken UI rendering over Remote Desktop with Windows 8
- The icons in the top-right of the main window are now scaled correctly for high-DPI
- Fixed a crash if you clicked to undo multiple actions after committing a shape
- Fixed some performance issues whereby non-active images were still rendering stuff in the background
- Fixed many tools emitting a history item even if the image was unaffected (e.g. drawing a brush stroke outside of the canvas)
- Fixed a leftover progress bar in the status bar after loading an image
- Fixed Ctrl+Arrow keys not moving the selection by 10 pixels (it only moved by 1 px) if you didn't first release the Ctrl key after you pasted with Ctrl+V
- Removed the dangling "Tool:" tooltip on the Tool selection button in the toolbar
- Fixed a crash when the language was changed if the new language's localized "paint.net User Files" folder already existed
- Fixed the dash style button in the toolbar being too skinny at 96 DPI (it worked fine at >96 DPI)
- Fixed the main window's application icon being off by 2 pixels
- Fixed Ctrl+D reverting selection movement if it was pressed too quickly after using the arrow keys
- Fixed some missed thumbnail updates, especially for the Layers window
- Fixed the Width/Height text boxes in the toolbar for Fixed Selection not having an outline around them
- Fixed a visual styles related crash on some buttons in some cases
- Fixed the main installer not running after the .NET 4.5.1 installer if it required a reboot
- Fixed the installer seeming to disappear if there wasn't enough disk space to install .NET 4.5.1
- Shapes no longer finish/commit if you press the delete key
- Non-active images no longer update their thumbnails when you make changes in another image which affect them (e.g. if you leave an uncommited shape on image 1, then switch to image 2 and change the color)
- Fixed a crash in the Text tool if you try to use a "bad" font (one which shows up in the font list as a yellow exclamation mark)

- Fixed: The Gaussian Blur effect was incorrectly calculating alpha values for non-opaque pixels.
- Improved performance of the Sharpen effect by about 25%
- Improved performance of the Median effect by about 30%
- Improved performance of the Fragment effect by about 40%
- Improved performance of the Unfocus effect by about 100%
- Reduced memory usage when many selection manipulation operations are in the history/undo stack (the undo data is now saved to disk)
- The built-in updater now supports upgrading to paint.net 4.0 (when it's available)

- Fixed: The Gaussian Blur effect was incorrectly calculating alpha values for non-opaque pixels.
- Improved performance of the Sharpen effect by about 25%
- Improved performance of the Median effect by about 30%
- Improved performance of the Fragment effect by about 40%
- Improved performance of the Unfocus effect by about 100%
- Reduced memory usage when many selection manipulation operations are in the history/undo stack (the undo data is now saved to disk)
- The built-in updater now supports upgrading to paint.net 4.0 (when it's available)

- Fixed: Ctrl+Shift+A now works again as a shortcut for View -> Actual Size (broken in 3.5.9)
- Fixed: Ctrl+0 still works for View -> Actual Size even if 10 or more images are open (broken in 3.5.9, it would switch to the 10th image).

- Improved: The "Auto-detect" bit-depth setting for PNG, BMP, and TGA now also determines which bit-depth to use based on which one produces the smallest file size, as well as which ones can save the image without losing fidelity.
- Improved: You can now use Ctrl+0 as a shortcut key for View -> Actual Size, in addition to Ctrl+Shift+A and Ctrl+Alt+0.
- Fixed: Some text in the DirectDraw Surface (DDS) Save Configuration UI was not being loaded.
- Fixed: Some DirectDraw Surface (DDS) files authored with other software (e.g. Unreal 2004) could not be loaded.
- Fixed: In some rare circumstances, clicking on the Save button in the toolbar would crash.
- Fixed: The Korean translation has been added back in, with the help of Bing machine translation to cover the few remaining strings that were untranslated.

* Improved: The "Auto-detect" bit-depth setting for PNG, BMP, and TGA now also determines which bit-depth to use based on which one produces the smallest file size, as well as which ones can save the image without losing fidelity.
* Improved: You can now use Ctrl+0 as a shortcut key for View -> Actual Size, in addition to Ctrl+Shift+A and Ctrl+Alt+0.
* Fixed: Some text in the DirectDraw Surface (DDS) Save Configuration UI was not being loaded.
* Fixed: Some DirectDraw Surface (DDS) files authored with other software (e.g. Unreal 2004) could not be loaded.
* Fixed: In some rare circumstances, clicking on the Save button in the toolbar would crash.
* Fixed: The Korean translation has been added back in, with the help of Bing machine translation to cover the few remaining strings that were untranslated.

- Fixed: Saving to a folder that has been moved or renamed will display an error instead of crashing
- Fixed: Saving to a Sharepoint site will now work
- Fixed: Saving to a file that is marked as read only will now give an error instead of crashing
- Fixed: General reliability and correctness improvements to fault-tolerant saving