RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 04:37:34 +00:00
Code Issues Activity Actions

PixelPaint: Fix the displayed order of layers in LayerListWidget

Browse source 
Previously the background layer was shown at the top, and layers
in front of it were shown below it. This was really unintuitive.

This patch fixes LayerListWidget to now properly differentiate
between the index of a gadget, and the index of a layer, since they
are essentially mirrored. I chose not to modify the order in which
layers are stored since back-to-front makes it really convenient
there.
This commit is contained in:
Mustafa Quraish 2021-09-02 04:26:10 -04:00 • committed by Andreas Kling
parent 432839c2e9
commit 97cc34c034
2 changed files with 52 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

75
Userland/Applications/PixelPaint/LayerListWidget.cpp
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -27,6 +28,16 @@ LayerListWidget::~LayerListWidget()
m_image->remove_client(*this);
}
size_t LayerListWidget::to_gadget_index(size_t layer_index) const
{
return m_image->layer_count() - layer_index - 1;
}
size_t LayerListWidget::to_layer_index(size_t gadget_index) const
{
return m_image->layer_count() - gadget_index - 1;
}
void LayerListWidget::set_image(Image* image)
{
if (m_image == image)
@ -44,8 +55,8 @@ void LayerListWidget::rebuild_gadgets()
{
m_gadgets.clear();
if (m_image) {
for (size_t layer_index = 0; layer_index < m_image->layer_count(); ++layer_index) {
m_gadgets.append({ layer_index, {}, false, {} });
for (int layer_index = m_image->layer_count() - 1; layer_index >= 0; --layer_index) {
m_gadgets.append({ static_cast<size_t>(layer_index), {}, false, {} });
}
}
relayout_gadgets();
@ -140,15 +151,16 @@ void LayerListWidget::mousedown_event(GUI::MouseEvent& event)
Gfx::IntPoint translated_event_point = { 0, vertical_scrollbar().value() + event.y() };
auto gadget_index = gadget_at(translated_event_point);
if (!gadget_index.has_value())
auto maybe_gadget_index = gadget_at(translated_event_point);
if (!maybe_gadget_index.has_value())
return;
auto gadget_index = maybe_gadget_index.value();
m_moving_gadget_index = gadget_index;
m_selected_layer_index = gadget_index.value();
m_selected_gadget_index = gadget_index;
m_moving_event_origin = translated_event_point;
auto& gadget = m_gadgets[m_moving_gadget_index.value()];
auto& layer = m_image->layer(gadget_index.value());
auto& layer = m_image->layer(to_layer_index(gadget_index));
set_selected_layer(&layer);
gadget.is_moving = true;
gadget.movement_delta = {};
@ -191,7 +203,10 @@ void LayerListWidget::mouseup_event(GUI::MouseEvent& event)
new_index = m_image->layer_count() - 1;
m_moving_gadget_index = {};
m_image->change_layer_index(old_index, new_index);
auto old_layer_index = to_layer_index(old_index);
auto new_layer_index = to_layer_index(new_index);
m_image->change_layer_index(old_layer_index, new_layer_index);
}
void LayerListWidget::context_menu_event(GUI::ContextMenuEvent& event)
@ -200,8 +215,8 @@ void LayerListWidget::context_menu_event(GUI::ContextMenuEvent& event)
auto gadget_index = gadget_at(translated_event_point);
if (gadget_index.has_value()) {
auto& layer = m_image->layer(gadget_index.value());
m_selected_layer_index = gadget_index.value();
m_selected_gadget_index = gadget_index.value();
auto& layer = m_image->layer(to_layer_index(m_selected_gadget_index));
set_selected_layer(&layer);
}
@ -215,8 +230,9 @@ void LayerListWidget::image_did_add_layer(size_t layer_index)
m_gadgets[m_moving_gadget_index.value()].is_moving = false;
m_moving_gadget_index = {};
}
Gadget gadget { layer_index, {}, false, {} };
m_gadgets.insert(layer_index, gadget);
auto gadget_index = to_gadget_index(layer_index);
Gadget gadget { gadget_index, {}, false, {} };
m_gadgets.insert(gadget_index, gadget);
relayout_gadgets();
}
@ -226,14 +242,16 @@ void LayerListWidget::image_did_remove_layer(size_t layer_index)
m_gadgets[m_moving_gadget_index.value()].is_moving = false;
m_moving_gadget_index = {};
}
m_gadgets.remove(layer_index);
m_selected_layer_index = 0;
// No -1 here since a layer has already been removed.
auto gadget_index = m_image->layer_count() - layer_index;
m_gadgets.remove(gadget_index);
m_selected_gadget_index = to_gadget_index(0);
relayout_gadgets();
}
void LayerListWidget::image_did_modify_layer_properties(size_t layer_index)
{
update(m_gadgets[layer_index].rect);
update(m_gadgets[to_gadget_index(layer_index)].rect);
}
void LayerListWidget::image_did_modify_layer_bitmap(size_t layer_index)
@ -241,7 +259,7 @@ void LayerListWidget::image_did_modify_layer_bitmap(size_t layer_index)
Gfx::IntRect adjusted_rect;
Gfx::IntRect thumbnail_rect;
Gfx::IntRect text_rect;
get_gadget_rects(m_gadgets[layer_index], adjusted_rect, thumbnail_rect, text_rect);
get_gadget_rects(m_gadgets[to_gadget_index(layer_index)], adjusted_rect, thumbnail_rect, text_rect);
update(thumbnail_rect);
}
@ -266,7 +284,7 @@ void LayerListWidget::select_bottom_layer()
{
if (!m_image || !m_image->layer_count())
return;
m_selected_layer_index = 0;
m_selected_gadget_index = to_gadget_index(0);
set_selected_layer(&m_image->layer(0));
}
@ -274,8 +292,8 @@ void LayerListWidget::select_top_layer()
{
if (!m_image || !m_image->layer_count())
return;
m_selected_layer_index = m_image->layer_count() - 1;
set_selected_layer(&m_image->layer(m_image->layer_count() - 1));
m_selected_gadget_index = 0;
set_selected_layer(&m_image->layer(to_layer_index(0)));
}
void LayerListWidget::cycle_through_selection(int delta)
@ -283,16 +301,17 @@ void LayerListWidget::cycle_through_selection(int delta)
if (!m_image || !m_image->layer_count())
return;
int selected_layer_index = static_cast<int>(m_selected_layer_index);
selected_layer_index += delta;
auto current_index = static_cast<int>(m_selected_gadget_index);
current_index += delta;
if (selected_layer_index < 0)
selected_layer_index = m_image->layer_count() - 1;
if (selected_layer_index > static_cast<int>(m_image->layer_count()) - 1)
selected_layer_index = 0;
if (current_index < 0)
current_index = m_gadgets.size() - 1;
if (current_index > static_cast<int>(m_gadgets.size()) - 1)
current_index = 0;
m_selected_layer_index = selected_layer_index;
set_selected_layer(&m_image->layer(m_selected_layer_index));
m_selected_gadget_index = current_index;
auto selected_layer_index = to_layer_index(m_selected_gadget_index);
set_selected_layer(&m_image->layer(selected_layer_index));
}
void LayerListWidget::relayout_gadgets()
@ -327,8 +346,8 @@ void LayerListWidget::set_selected_layer(Layer* layer)
for (size_t i = 0; i < m_image->layer_count(); ++i) {
if (layer == &m_image->layer(i)) {
m_image->layer(i).set_selected(true);
scroll_into_view(m_gadgets[i].rect, false, true);
m_selected_layer_index = i;
m_selected_gadget_index = to_gadget_index(i);
scroll_into_view(m_gadgets[m_selected_gadget_index].rect, false, true);
} else {
m_image->layer(i).set_selected(false);
}