RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 02:37:42 +00:00
Code Issues Activity Actions

LibGUI: Start adding an automatic widget layout system.

Browse source 
My needs are really quite simple, so I'm just going to add what I need
as I go along. The first thing I needed was a simple box layout with
widgets being able to say whether they prefer fixed or fill for both
their vertical and horizontal sizes.

I also made a simple GStatusBar so FileManager can show how many bytes
worth of files are in the current directory.
This commit is contained in:
Andreas Kling 2019-02-10 11:07:13 +01:00
parent 2cf1dd5b6f
commit 2def3d8d3f
22 changed files with 411 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

89
LibGUI/GBoxLayout.cpp Normal file
View file

@ -0,0 +1,89 @@
#include <LibGUI/GBoxLayout.h>
#include <LibGUI/GWidget.h>
GBoxLayout::GBoxLayout(Orientation orientation)
: m_orientation(orientation)
{
}
GBoxLayout::~GBoxLayout()
{
}
#if 0
Size GLayout::compute_preferred_size() const
{
}
static Size compute_preferred_size(GLayout::Entry& entry)
{
if (entry.layout)
return entry.layout->compute_preferred_size();
else {
return entry.widget->preferred_size();
}
}
#endif
void GBoxLayout::run(GWidget& widget)
{
if (m_entries.is_empty())
return;
Size available_size = widget.size();
int number_of_entries_with_fixed_size = 0;
for (auto& entry : m_entries) {
if (entry.widget && entry.widget->size_policy(orientation()) == SizePolicy::Fixed) {
available_size -= entry.widget->preferred_size();
++number_of_entries_with_fixed_size;
}
}
int number_of_entries_with_automatic_size = m_entries.size() - number_of_entries_with_fixed_size;
dbgprintf("GBoxLayout: available_size=%d, fixed=%d, fill=%d\n", available_size.height(), number_of_entries_with_fixed_size, number_of_entries_with_automatic_size);
Size automatic_size;
if (m_orientation == Orientation::Horizontal) {
automatic_size.set_width(available_size.width() / number_of_entries_with_automatic_size);
automatic_size.set_height(widget.height());
} else {
automatic_size.set_width(widget.width());
automatic_size.set_height(available_size.height() / number_of_entries_with_automatic_size);
}
dbgprintf("GBoxLayout: automatic_size=%s\n", automatic_size.to_string().characters());
int current_x = 0;
int current_y = 0;
for (auto& entry : m_entries) {
Rect rect(current_x, current_y, 0, 0);
if (entry.layout) {
// FIXME: Implement recursive layout.
ASSERT_NOT_REACHED();
}
ASSERT(entry.widget);
if (entry.widget->size_policy(orientation()) == SizePolicy::Fixed) {
rect.set_size(automatic_size);
if (orientation() == Orientation::Vertical) {
rect.set_height(entry.widget->preferred_size().height());
} else {
rect.set_width(entry.widget->preferred_size().height());
}
} else {
rect.set_size(automatic_size);
}
dbgprintf("GBoxLayout: apply, %s{%p} <- %s\n", entry.widget->class_name(), entry.widget.ptr(), rect.to_string().characters());
entry.widget->set_relative_rect(rect);
if (orientation() == Orientation::Horizontal)
current_x += rect.width();
else
current_y += rect.height();
}
}