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PixelPaint: Allow bigger Brush-Tool sizes

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This patch allows a bigger brush tool size of 250 pixels and limits the
cursor bitmap to a reasonable size so that its not much bigger than the
image editor size. If the cursor is bigger as the editor it is rended
with a red edge to indicate that the actual cursor is bigger than
displayed. This change mitigates the OOM conditions when the cursor
gets unusual big.
This commit is contained in:
Torstennator 2023-07-18 14:25:33 +02:00 • committed by Sam Atkins
parent 55edfe5c3c
commit 31ee20e179
4 changed files with 46 additions and 22 deletions
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37
Userland/Applications/PixelPaint/Tools/BrushTool.cpp
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@ -1,7 +1,7 @@
/*
* Copyright (c) 2020, Ben Jilks <benjyjilks@gmail.com>
* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2022, Torsten Engelmann <engelTorsten@gmx.de>
* Copyright (c) 2022-2023, Torsten Engelmann <engelTorsten@gmx.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -149,10 +149,10 @@ ErrorOr<GUI::Widget*> BrushTool::get_properties_widget()
auto size_label = TRY(size_container->try_add<GUI::Label>("Size:"_string));
size_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
size_label->set_fixed_size(80, 20);
size_label->set_fixed_size(60, 20);
auto size_slider = TRY(size_container->try_add<GUI::ValueSlider>(Orientation::Horizontal, "px"_string));
size_slider->set_range(1, 100);
size_slider->set_range(1, 250);
size_slider->set_value(m_size);
size_slider->set_override_cursor(cursor());
@ -169,7 +169,7 @@ ErrorOr<GUI::Widget*> BrushTool::get_properties_widget()
auto hardness_label = TRY(hardness_container->try_add<GUI::Label>("Hardness:"_string));
hardness_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
hardness_label->set_fixed_size(80, 20);
hardness_label->set_fixed_size(60, 20);
auto hardness_slider = TRY(hardness_container->try_add<GUI::ValueSlider>(Orientation::Horizontal, "%"_string));
hardness_slider->set_range(1, 100);
@ -188,19 +188,23 @@ ErrorOr<GUI::Widget*> BrushTool::get_properties_widget()
NonnullRefPtr<Gfx::Bitmap> BrushTool::build_cursor()
{
m_scale_last_created_cursor = m_editor ? m_editor->scale() : 1;
auto scaled_size = size() * m_scale_last_created_cursor;
auto containing_box_size = 2 * scaled_size;
auto containing_box_size = AK::clamp(preferred_cursor_size(), 1.0f, max_allowed_cursor_size());
auto centered = containing_box_size / 2;
NonnullRefPtr<Gfx::Bitmap> new_cursor = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, Gfx::IntSize(containing_box_size, containing_box_size)).release_value_but_fixme_should_propagate_errors();
Gfx::Painter painter { new_cursor };
Gfx::AntiAliasingPainter aa_painter { painter };
painter.draw_line({ scaled_size - 5, scaled_size }, { scaled_size + 5, scaled_size }, Color::LightGray, 3);
painter.draw_line({ scaled_size, scaled_size - 5 }, { scaled_size, scaled_size + 5 }, Color::LightGray, 3);
painter.draw_line({ scaled_size - 5, scaled_size }, { scaled_size + 5, scaled_size }, Color::MidGray, 1);
painter.draw_line({ scaled_size, scaled_size - 5 }, { scaled_size, scaled_size + 5 }, Color::MidGray, 1);
aa_painter.draw_ellipse(Gfx::IntRect(0, 0, containing_box_size, containing_box_size), Color::LightGray, 1);
painter.draw_line({ centered - 5, centered }, { centered + 5, centered }, Color::LightGray, 3);
painter.draw_line({ centered, centered - 5 }, { centered, centered + 5 }, Color::LightGray, 3);
painter.draw_line({ centered - 5, centered }, { centered + 5, centered }, Color::MidGray, 1);
painter.draw_line({ centered, centered - 5 }, { centered, centered + 5 }, Color::MidGray, 1);
if (max_allowed_cursor_size() != containing_box_size) {
aa_painter.draw_ellipse(Gfx::IntRect(0, 0, containing_box_size, containing_box_size), Color::LightGray, 1);
} else {
aa_painter.draw_ellipse(Gfx::IntRect(0, 0, containing_box_size, containing_box_size), Color::Red, 1);
aa_painter.draw_ellipse(Gfx::IntRect(3, 3, containing_box_size - 6, containing_box_size - 6), Color::LightGray, 1);
}
return new_cursor;
}
@ -211,4 +215,13 @@ void BrushTool::refresh_editor_cursor()
m_editor->update_tool_cursor();
}
float BrushTool::preferred_cursor_size()
{
return 2 * size() * (m_editor ? m_editor->scale() : 1);
}
float BrushTool::max_allowed_cursor_size()
{
return m_editor ? Gfx::IntPoint(0, 0).distance_from({ m_editor->width(), m_editor->height() }) * 1.1f : 500;
}
}