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.
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.
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.
Vertical scrollbar didn't appear even when the number of lines in the control
became one greater than the maximal fitting number of lines, but only when one
more line was added.
This seems to have been a simple off-by-one error in SetScrollbar() calls, so
fix this by adding 1 to the upper end of the range.
Closes#17548.
Add a new class allowing to store passwords and other sensitive information
using the OS-provided facilities.
Add implementations for all the main platforms, documentation and a new sample
(which contains an ad hoc unit test as the real unit test for this class would
probably be a bad idea as it wouldn't run in non-interactive contexts and
could show OS level dialog boxes if it did).
Selection at wxAuiNotebook level was not updated, resulting in all attempts to
select the tab at the same index as the tab that was dragged elsewhere being
ignored, e.g. after dragging the first tab to the second position in the AUI
sample, the first tab couldn't be selected again.
Fix this by always changing the selection in OnTabEndDrag(). This might not be
the best thing to do as the selection is also changed later in the code and
the fact that the code returns without sending the event is probably a bug
too, but for now at least fix the user-visible problem.
Closes#15071.
This method can be used to change the list view header appearance.
Add the method declaration, documentation, show it in the sample and implement
it for wxMSW (only, for now).
Return the size of the entire virtual screen, possibly composed from multiple
monitors, rather than just the size of the primary monitor.
This makes this method consistent with wxScreenDC actually representing the
entire virtual screen and not just the primary monitor and also with wxGTK.
Closes#13279.
Expand() called ExpandAncestors() in the generic wxDataViewCtrl implementation
but not in the native ones, resulting in observable difference in the
behaviour: for example, the wxDataViewTreeCtrl in the dataview sample appeared
initially expanded under MSW, using the generic version, but collapsed under
GTK and OSX.
Harmonize this among all ports. This also has a nice side effect of making
Expand() less horribly inefficient as it is not recursively called by
ExpandAncestors() which it itself used to call: now ExpandAncestors() only
calls DoExpand() which is a simple function that only expands the item passed
to it and does nothing else.
Closes#14803.
The code handling background colour was commented out for some reason, simply
enable it as it seems to be working just fine -- and update the sample to show
that it does.
This class can be used even without SEH, provided debug help API is available,
so just make wxUSE_STACKWALKER dependent on wxUSE_DBGHELP instead of
unconditionally disabling it if SEH support is not available.
Add XRC handler for wxAuiManager and include the existing wxAuiNotebook
handler into it (but notice that wxAuiToolBar handler added by a later #15686
in f269f868d7 remains separate).
Also update the AUI dialog in the sample and stop hardcoding its size in
pixels.
See #13520.
