Bounding box coordinates have to be calculated and stored internally in device units to be independent on changes of logical coordinates between calls to wxDC::CalcBoundingBox.
These stored coordinates are converted to the logical units on demand when they are retrieved with call to wxDC::MinX, MinY, MaxX or MaxY.
Closes#17667.
Don't bother with checking for some really obsolete compilers and just assume
that C++98 keywords "explicit", "{static,const,dynamic}_cast" and support for
partial template specialization is always available.
Closes#17655.
Graphics renderers (exposed through wxGraphicsContext) support arbitrary affine transformations so it is possible to add support for affine transformations in wxGCDC by implementing all wxGCDC::*TransformMatrix() functions with calls to respective wxGraphicsContext functions.
Additionally, this implementation adds support for affine transformations in wxDC under wxGTK3 because in this port wxDC is equivalent to wxGCDC.
Member data containing clipping box have to be updated not only when the clipping region is explicitly changed by SetClippingRegion()/DestroyClippingRegion() but also when wxDC coordinates are transformed with SetDeviceOrigin(), SetLogicalOrigin(), SetUserScale(), SetLogicalScale(), SetTransformMatrix() or ResetTransformMatrix().
When any of these functions is called then clipping box data are marked as invalid and updated by recalculating extents of the clipping region in new coordinates at nearest call to GetClippingBox().
Closes#17646.
Member data containing clipping box have to be updated not only when the clipping region is explicitly changed by SetClippingRegion()/DestroyClippingRegion() but also when existing wxGraphicsContext is associated with wxGCDC using SetGraphicsContext() or when wxGCDC coordinates are transformed with SetDeviceOrigin(), SetLogicalOrigin(), SetUserScale() or SetLogicalScale().
When any of these functions is called then clipping box data are marked as invalid and retrieved from underlying graphics context using wxGraphicsContext::GetClipBox() at nearest call to GetClippingBox().
See #17646.
Member data containing clipping box have to be updated not only when the clipping region is explicitly changed by SetClippingRegion()/DestroyClippingRegion() but also when existing HDC is associated with wxDC using SetHDC() or when wxDC coordinates are transformed with SetDeviceOrigin(), SetLogicalOrigin(), SetUserScale(), SetLogicalScale(), SetTransformMatrix() or ResetTransformMatrix().
When any of these functions is called then clipping box data are marked as invalid and updated using GetClipBox() Win API at nearest call to GetClippingBox().
See #17646.
When complex transformation (including e.g. rotation) is applied to DC then coordinates of the clip box return by GetClipBox() API can be inaccurate due to the rounding errors.
To compensate these errors we need to fill rectangle which is slightly larger then just retrieved clip box.
Closes#17636.
If underlying graphics context is rotated then drawing a rectangle with origin at (0,0) doesn't cover all the drawing area. To draw over entire area we need to get extents of the actual clipping region (with applied all transformations) and use it as coordinates of the drawn rectangle.
See #17636.
Width and height were exchanged in the loops, so the conversion code didn't
work correctly and overflowed the pixel buffer (due to extra padding in the
row stride) for non-square bitmaps. It also resulted in a completely wrong
bitmap appearance, but somehow this managed to go unnoticed, unlike the memory
errors.
Closes#17633.
When wxImage is rescaled with wxIMAGE_QUALITY_BILINEAR, wxIMAGE_QUALITY_BICUBIC or wxIMAGE_QUALITY_BOX_AVERAGE algorithm then for proper interpolation there is necessary to uniformly (linearly) map entire pixel range in the new image to the entire pixel range in the current image, i.e. pixels positions (integer values) in range [0..newDim-1] has to be mapped to "virtual" pixel positions (not necessary integer values) exactly in the range [0..oldDim-1].
[0..oldDim-1] range of target mapping is required because for proper interpolation every "virtual" pixel has to be located between two physical pixels in the current image.
Thus scaling ratio used to find corresponding pixels in the current image should be (oldDim-1)/(newDim-1) and not oldDim/newDim (which is used now).
When image is e.g. upsampled oldDim/newDim ratio then some new rightmost/botommost pixels are mapped to old pixels > (oldDim-1) and their values are improperly interpolated (in the current implementation their positions are just truncated to (oldDim-1) to bypass the problem and upsampled image looks like it was shifted left/up). The larger scaling ratio the effect is more visible.
Note:
Because reference images used currently in the unit tests were created with improper scaling there is necessary to upload new reference images created with fixed scaling.
Closes#17594
While setting a clipping region there is necessary to intersect it either with current clipping region location if such region exists or with wxDC surface extents if no clipping region is set. This way effective clipping box will be always inside the wxDC surface. Effective clipping box can be an empty region.
Clipping box parameters are calculated and stored in logical coordinates.
Focus rectangle was still drawn around the label when it was empty with some
themes, so hide it completely to ensure this doesn't happen.
Closes#17443.
Introduce a new type for XRC values imaginatively called just "pair of
integers" which can be used for values not expressed in pixels and hence for
which it doesn't make sense to use dialog units nor to scale them by the DPI.
Use this new type for wxGridBagSizer position and span elements to prevent
them from being changed when using higher than normal DPI.
Closes#17592.
This reverts commit 71dfb3b414 which fixed
appearance of the captions in high contrast mode but broke them for wxGTK.
Ideal would be to make this code work in wxGTK too or, in the worst, case only
use this code for wxMSW, but for now at least avoid breaking wxGTK appearance
by default.
See #16186.
Simplify the officialbuild.bat script by only checking for "vcXX" instead of
accepting both them and "vsYYYY".
Also add instructions for using it in the corresponding HOWTO.
Closes#17514.
This reverts 6c40531fb7 ("Make main thread wake
up code more efficient and less error-prone in wxMSW") as, while being more
efficient, the new code doesn't work at all when we're not running the message
loop ourselves as it happens when the user opens a menu or starts resizing a
window because in both cases Windows runs a local message loop dispatching the
messages itself and this message loop doesn't react to our event object being
signalled.
So this approach can't work and needs to be reverted, even if it reintroduces
the danger of overflowing the message queue (see #9053).
Closes#17579.
There is no way to show the hint without native support in a control with
wxTE_PASSWORD style, so simply ignore them completely in this case.
Closes#17078.
Only use TBSTYLE_AUTOSIZE, adjusting each button to the size it really needs,
for the toolbars with wxTB_HORZ_LAYOUT style as they don't have any uniform
button size anyhow.
The loop over the existing selection was buggy and took into account only one
corner of the block instead of the entire block and also skipped some blocks
entirely.
Closes#17572.
Many improvements in wxSVGFileDC to improve its support of wxDC API including:
- Enabled usage of clipping regions.
- Correctly draw polypolygons.
- Draw lines as one long line instead of many short lines.
- Drawing text improvements (position, multi-line, underlined, strike-through).
- Support more brush and pen styles.
- Add Saving as SVG to drawing sample.
- Implemented Clear().
- Set the SVG title.
- Produce valid svg/xml.
- Correctly draw ellipses and arcs.
See https://github.com/wxWidgets/wxWidgets/pull/215
Apply the appropriate style to any text being inserted, not just the text
added by the program. This not only fixes the bug with default style not being
used for the text entered by user, but also makes the code simpler.
Closes#17523.
Just return a reference to an empty wxString, as GetFirstLine() already does
(although this is actually questionable -- what if this string is modified?).
See #17283.
