The assumption that the pointer will keep pointing to a valid structure is
fundamentally flawed. And even if that is true today, it might change in
the future - just don't do it. Use the diveId instead.
The exception is when you own the structure and use it within one UI
interaction during which any way to change the dive_table is disabled
(e.g., while adding / editing a dive).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This patch improves the algorithm when estimating where
to put the new page header in the table and how we move
larger dive rows on a new page. It now performs a couple of
'passes', where the first one processes the table and the
second one is used to compensate for the lost space.
Fixes#326
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The whole procedure here is quite confusing.
Once we have our model populated, we need to estimate where
to put page headers (each page has one) and to do that we
store a list of indexes, where a page would begin (pageIndexes).
But since a row can end up being chopped at the end of a page
we move it to a new page and this particular part was lacking
compensation for the moved row's height, when storing the *last*
pageIndex.
For N number of pages we are losing N - 1 dives, or such that
were previously transferred on a new page.
See #326
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
I can't really see any point in passing a local loop variable around,
and copying a uninitialized pointer. Better use local variables there
and let the compiler optimize them away if it feels for doing that.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
In the PrintLayout constructor we receive a pointer
of PrintDialog, but the type is incomplete, as we only
forward declare it in the class header. If we decide
to eventually call a method from PrintDialog we also
need to include printdialog.h in printlayout.cpp.
The patch also fixes a similar issue in printdialog.h.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
printTable() now emits a 'signalProgress'
to the PrintDialog's progress bar, but it has 3 stages (loops):
- pupulate a model
- process all rows
- render the table in pages
This requires that we also separate the progress in 3 stages
of 33%.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
estimateTotalDives() is used to calculate the total dives
to be printed, it requires a 'struct dive' pointer
and a couple of 'int' pointers for the iterator 'i' and
'total' return.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
We now only use a slightly large font for the "Dive #" entry.
All other font sizes remain at 9px.
Another change is that we now attempt to use 11px for
individual row height. This makes the table at least 12px bigger
(n_rows * increment), but does not cut letters like 'g',
which go slightly bellow the font baseline.
Perhaps this can be improved later by adjusting the font
and row sizes again.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
There is not enough space for the last column in "6 print"
even for the english text. This gives more space extending
the row, but for some languages it will be an issue, thus
strings have to be eventually shortened by the translators.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Going through pixmaps for the profile was not needed and was making our prints
look very pixelated.
In Qt4, QWidget child classes are printed as bitmaps. So appart from
changing the code to print the tables to use a QGraphicsView instead,
there is nothing we can do, so the rest of the printing is still done as bitmaps.
Signed-off-by: Patrick Valsecchi <patrick@thus.ch>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Function is redundant as we should only render the profile
with a custom color table.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Because of varying font (screen) DPI we use pixel sized fonts
when printing. Apparently 8px does not look that good on Windows
default fonts, but kinda OK on Linux. We compensate by
increasing the font size and table rows to 9px.
Also decrease the padding between the table and profile to 5px.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Custom widget frame styles such as 'Sunken' and 'Raised' which seem to
varry between OS will be captured as well:
http://harmattan-dev.nokia.com/docs/library/html/qt4/qframe.html#Shape-enum
So instead we temporarily set the profile frame to QFrame::NoFrame and
then restore it to the previous value.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Patch enables the 'Profile on top' / 'Notes on top'
functionality in the print options dialog.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
PrintLayout::printTable():
- hide the QTableView widget border using a stylesheet
- add a guard to fix the last column extending post the page width
due to rounding
- use 1 extra pixel instead of 2 when grabbing the page region
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This patch adds a couple of classes and some other modifications
in PrintLayout that handle the printing of tables under a profile.
models.h : ProfilePrintModel
The class uses a 'struct *dive' to output all required data
for a certain dive at specific rows and columns. It also handles
font formatting and text alignment.
modeldelagatates.h : ProfilePrintDelegate
The class is used only for drawing a custom grid for profile tables.
PrintLayout::createProfileTable()
The function is used to create and setup the profile table object
PrintLayout::printProfileDives()
The function now has correct padding of dive profiles on a page
and also the printing of actual tables below them.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
printlayout.cpp(h):
This patch cleans some test code and adds the function
printProfileDives() that accepts a number of dives
per rows and columns. It can technically fit any number
of dives on a page given the page size allows it. Both
landscape and portrait layouts are supported.
It now replaces the old methods:
printTwoDives()
printSixDives()
Space is reserved for data tables that will be placed
bellow profiles on a later stage.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
The current QTextDocument implementation is slow due to
HTML parsing. By using QTableView with QAbstractTableModel
we boost the performance of the table print drastically.
This patch completely replaces the old solution.
There is a hidden QTableView widget which is populated
with all data and rendered using a QPainter attached to
the printer device.
A couple of new classes are added in models.h/cpp
that handle the table print model and these are then used
in printlayout.h/cpp.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
We pass the value of 'color_selected' stored in the
print options to ProfileGraphicsView::setPrintMode().
This way the profile can be printed in grayscale
internally instead of converting a QPixmap to
grayscale.
There are a couple of questions here:
1) Are all the 'if/then' checks for all individual
colors faster than the direct QPixmap/QImage grayscale
coversation.
2) The direct grayscale conversation does not give
control of individual colors, but can it look actually
better?
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
(experimental)
Add the method PrintLayout::convertPixmapToGrayscale()
to convert a rendered profile pixmap to grayscale.
It will probably be faster to have
ProfileGraphicsView render in grayscale under certain
conditions (and use a specific color table) instead -
e.g.:
ProfileGraphicsView::setPrintMode(bool printMode,
bool useGrayScale);
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
PrintLayout::printSixDives() goes trough all dives
and prints their profiles on full portrait pages.
This method is based on resizing the ProfileGraphicsView
widget, plotting each dive and then 'grabbing' it using
QPixmap::grabWidget().
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
There is a potential issue when placing a heading on a new
page. If the height of a data row is larger of that of
a heading, a new heading can end up at the bottom of a page
leaving that page with two headings.
To solve that we add line breaks (<br>) until the new
page is reached and add the heading there. Algorithm
assumes that the height of a heading is larger than
a line break. Also it is now obviously even slower.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
QTextDocument uses a separate painting device,
thus we need to pass our QPrinter instance which may
have a resolution different from the screen resolution.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
It might be a good practice to declare certain class
'helper' functions as constant members. But I don't
think there are performance benefits to that other
than the readability ones.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
We use the DiveItem struct from models.h so to ease the
display of date, depth and duration. All columns present
in the GTK build are now displayed.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Patch does:
- set individual column width and name
(held in tableColumnNames, tableColumnWidths)
- reduce font size in the table
- more small tweaks in the style sheet
TODO: finish printing all dive data
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
We don't really need includes of display.h and dive.h in
printoptions.h and printlayout.h or forward declartions
of 'struct dive' and 'struct options' in there.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
also includes:
- experiment with colored background for headings
- experiment with 'left' alignment for headings
('th' tag CSS does not support 'text-align')
- whitespace fixes
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Currently only for the table print, but now we use the
actual dive table to iterate trough all dives (find only
selected if needed) and print their 'number' element
in table rows.
Also improves the new-page detection algorithm slightly.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
PrintLayout for now only handles the table print,
while the data output itself is work in progress.
For now there is a simple HTML/CSS table logic based
on QTextDocument. There is an iterative algorithm
which listens for a page increase and adds a heading
on top of the new page.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
The setup() method will be called each time to obtain the
current printer settings. Also it calculates required scalling
based on screen agains printer DPI.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
PrintLayout is a class that will handle the layouting part
of dive profiles, text, tables depending on the settings
of a QPrinter and the PrinterDialog and PrintOptions
instances.
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
