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serenity/Libraries/LibDraw/StylePainter.cpp
Andreas Kling d3b40547f7 LibDraw: Fix 1px wide glitch in progress bar painting at some widths
Make sure we always line up the "hole" in the progress bar with the
right side of the paint rect. This fixes a 1px wide glitch seen when
using a darker system theme.
2019-12-25 21:59:37 +01:00

259 lines
12 KiB
C++

#include <LibDraw/Painter.h>
#include <LibDraw/Palette.h>
#include <LibDraw/StylePainter.h>
void StylePainter::paint_tab_button(Painter& painter, const Rect& rect, const Palette& palette, bool active, bool hovered, bool enabled)
{
Color base_color = palette.button();
Color highlight_color2 = palette.threed_highlight();
Color shadow_color1 = palette.threed_shadow1();
Color shadow_color2 = palette.threed_shadow2();
if (hovered && enabled && !active)
base_color = palette.hover_highlight();
PainterStateSaver saver(painter);
painter.translate(rect.location());
// Base
painter.fill_rect({ 1, 1, rect.width() - 2, rect.height() - 1 }, base_color);
// Top line
painter.draw_line({ 2, 0 }, { rect.width() - 3, 0 }, highlight_color2);
// Left side
painter.draw_line({ 0, 2 }, { 0, rect.height() - 1 }, highlight_color2);
painter.set_pixel({ 1, 1 }, highlight_color2);
// Right side
painter.draw_line({
rect.width() - 1,
2,
},
{ rect.width() - 1, rect.height() - 1 }, shadow_color2);
painter.draw_line({
rect.width() - 2,
2,
},
{ rect.width() - 2, rect.height() - 1 }, shadow_color1);
painter.set_pixel({
rect.width() - 2,
1,
},
shadow_color2);
}
static void paint_button_new(Painter& painter, const Rect& rect, const Palette& palette, bool pressed, bool checked, bool hovered, bool enabled)
{
Color button_color = palette.button();
Color highlight_color2 = palette.threed_highlight();
Color shadow_color1 = palette.threed_shadow1();
Color shadow_color2 = palette.threed_shadow2();
if (checked && enabled) {
if (hovered)
button_color = palette.hover_highlight();
else
button_color = palette.button();
} else if (hovered && enabled)
button_color = palette.hover_highlight();
PainterStateSaver saver(painter);
painter.translate(rect.location());
if (pressed || checked) {
// Base
painter.fill_rect({ 1, 1, rect.width() - 2, rect.height() - 2 }, button_color);
painter.draw_rect({ {}, rect.size() }, shadow_color2);
// Sunken shadow
painter.draw_line({ 1, 1 }, { rect.width() - 2, 1 }, shadow_color1);
painter.draw_line({ 1, 2 }, { 1, rect.height() - 2 }, shadow_color1);
} else {
// Base
painter.fill_rect({ 1, 1, rect.width() - 3, rect.height() - 3 }, button_color);
// Outer highlight
painter.draw_line({ 0, 0 }, { rect.width() - 2, 0 }, highlight_color2);
painter.draw_line({ 0, 1 }, { 0, rect.height() - 2 }, highlight_color2);
// Outer shadow
painter.draw_line({ 0, rect.height() - 1 }, { rect.width() - 1, rect.height() - 1 }, shadow_color2);
painter.draw_line({ rect.width() - 1, 0 }, { rect.width() - 1, rect.height() - 2 }, shadow_color2);
// Inner shadow
painter.draw_line({ 1, rect.height() - 2 }, { rect.width() - 2, rect.height() - 2 }, shadow_color1);
painter.draw_line({ rect.width() - 2, 1 }, { rect.width() - 2, rect.height() - 3 }, shadow_color1);
}
}
void StylePainter::paint_button(Painter& painter, const Rect& rect, const Palette& palette, ButtonStyle button_style, bool pressed, bool hovered, bool checked, bool enabled)
{
if (button_style == ButtonStyle::Normal)
return paint_button_new(painter, rect, palette, pressed, checked, hovered, enabled);
Color button_color = palette.button();
Color highlight_color = palette.threed_highlight();
Color shadow_color = palette.threed_shadow1();
if (button_style == ButtonStyle::CoolBar && !enabled)
return;
PainterStateSaver saver(painter);
painter.translate(rect.location());
if (pressed || checked) {
// Base
painter.fill_rect({ 1, 1, rect.width() - 2, rect.height() - 2 }, button_color);
// Sunken shadow
painter.draw_line({ 1, 1 }, { rect.width() - 2, 1 }, shadow_color);
painter.draw_line({ 1, 2 }, { 1, rect.height() - 2 }, shadow_color);
// Bottom highlight
painter.draw_line({ rect.width() - 2, 1 }, { rect.width() - 2, rect.height() - 3 }, highlight_color);
painter.draw_line({ 1, rect.height() - 2 }, { rect.width() - 2, rect.height() - 2 }, highlight_color);
} else if (button_style == ButtonStyle::CoolBar && hovered) {
// Base
painter.fill_rect({ 1, 1, rect.width() - 2, rect.height() - 2 }, button_color);
// White highlight
painter.draw_line({ 1, 1 }, { rect.width() - 2, 1 }, highlight_color);
painter.draw_line({ 1, 2 }, { 1, rect.height() - 2 }, highlight_color);
// Gray shadow
painter.draw_line({ rect.width() - 2, 1 }, { rect.width() - 2, rect.height() - 3 }, shadow_color);
painter.draw_line({ 1, rect.height() - 2 }, { rect.width() - 2, rect.height() - 2 }, shadow_color);
}
}
void StylePainter::paint_surface(Painter& painter, const Rect& rect, const Palette& palette, bool paint_vertical_lines, bool paint_top_line)
{
painter.fill_rect({ rect.x(), rect.y() + 1, rect.width(), rect.height() - 2 }, palette.button());
painter.draw_line(rect.top_left(), rect.top_right(), paint_top_line ? palette.threed_highlight() : palette.button());
painter.draw_line(rect.bottom_left(), rect.bottom_right(), palette.threed_shadow1());
if (paint_vertical_lines) {
painter.draw_line(rect.top_left().translated(0, 1), rect.bottom_left().translated(0, -1), palette.threed_highlight());
painter.draw_line(rect.top_right(), rect.bottom_right().translated(0, -1), palette.threed_shadow1());
}
}
void StylePainter::paint_frame(Painter& painter, const Rect& rect, const Palette& palette, FrameShape shape, FrameShadow shadow, int thickness, bool skip_vertical_lines)
{
Color top_left_color;
Color bottom_right_color;
Color dark_shade = palette.threed_shadow1();
Color light_shade = palette.threed_highlight();
if (shape == FrameShape::Container && thickness >= 2) {
if (shadow == FrameShadow::Raised) {
dark_shade = palette.threed_shadow2();
}
}
if (shadow == FrameShadow::Raised) {
top_left_color = light_shade;
bottom_right_color = dark_shade;
} else if (shadow == FrameShadow::Sunken) {
top_left_color = dark_shade;
bottom_right_color = light_shade;
} else if (shadow == FrameShadow::Plain) {
top_left_color = dark_shade;
bottom_right_color = dark_shade;
}
if (thickness >= 1) {
painter.draw_line(rect.top_left(), rect.top_right(), top_left_color);
painter.draw_line(rect.bottom_left(), rect.bottom_right(), bottom_right_color);
if (shape != FrameShape::Panel || !skip_vertical_lines) {
painter.draw_line(rect.top_left().translated(0, 1), rect.bottom_left().translated(0, -1), top_left_color);
painter.draw_line(rect.top_right(), rect.bottom_right().translated(0, -1), bottom_right_color);
}
}
if (shape == FrameShape::Container && thickness >= 2) {
Color top_left_color;
Color bottom_right_color;
Color dark_shade = palette.threed_shadow2();
Color light_shade = palette.button();
if (shadow == FrameShadow::Raised) {
dark_shade = palette.threed_shadow1();
top_left_color = light_shade;
bottom_right_color = dark_shade;
} else if (shadow == FrameShadow::Sunken) {
top_left_color = dark_shade;
bottom_right_color = light_shade;
} else if (shadow == FrameShadow::Plain) {
top_left_color = dark_shade;
bottom_right_color = dark_shade;
}
Rect inner_container_frame_rect = rect.shrunken(2, 2);
painter.draw_line(inner_container_frame_rect.top_left(), inner_container_frame_rect.top_right(), top_left_color);
painter.draw_line(inner_container_frame_rect.bottom_left(), inner_container_frame_rect.bottom_right(), bottom_right_color);
painter.draw_line(inner_container_frame_rect.top_left().translated(0, 1), inner_container_frame_rect.bottom_left().translated(0, -1), top_left_color);
painter.draw_line(inner_container_frame_rect.top_right(), inner_container_frame_rect.bottom_right().translated(0, -1), bottom_right_color);
}
if (shape == FrameShape::Box && thickness >= 2) {
swap(top_left_color, bottom_right_color);
Rect inner_rect = rect.shrunken(2, 2);
painter.draw_line(inner_rect.top_left(), inner_rect.top_right(), top_left_color);
painter.draw_line(inner_rect.bottom_left(), inner_rect.bottom_right(), bottom_right_color);
painter.draw_line(inner_rect.top_left().translated(0, 1), inner_rect.bottom_left().translated(0, -1), top_left_color);
painter.draw_line(inner_rect.top_right(), inner_rect.bottom_right().translated(0, -1), bottom_right_color);
}
}
void StylePainter::paint_window_frame(Painter& painter, const Rect& rect, const Palette& palette)
{
Color base_color = palette.button();
Color dark_shade = palette.threed_shadow2();
Color mid_shade = palette.threed_shadow1();
Color light_shade = palette.threed_highlight();
painter.draw_line(rect.top_left(), rect.top_right(), base_color);
painter.draw_line(rect.top_left().translated(0, 1), rect.bottom_left(), base_color);
painter.draw_line(rect.top_left().translated(1, 1), rect.top_right().translated(-1, 1), light_shade);
painter.draw_line(rect.top_left().translated(1, 1), rect.bottom_left().translated(1, -1), light_shade);
painter.draw_line(rect.top_left().translated(2, 2), rect.top_right().translated(-2, 2), base_color);
painter.draw_line(rect.top_left().translated(2, 2), rect.bottom_left().translated(2, -2), base_color);
painter.draw_line(rect.top_right(), rect.bottom_right(), dark_shade);
painter.draw_line(rect.top_right().translated(-1, 1), rect.bottom_right().translated(-1, -1), mid_shade);
painter.draw_line(rect.top_right().translated(-2, 2), rect.bottom_right().translated(-2, -2), base_color);
painter.draw_line(rect.bottom_left(), rect.bottom_right(), dark_shade);
painter.draw_line(rect.bottom_left().translated(1, -1), rect.bottom_right().translated(-1, -1), mid_shade);
painter.draw_line(rect.bottom_left().translated(2, -2), rect.bottom_right().translated(-2, -2), base_color);
}
void StylePainter::paint_progress_bar(Painter& painter, const Rect& rect, const Palette& palette, int min, int max, int value, const StringView& text)
{
// First we fill the entire widget with the gradient. This incurs a bit of
// overdraw but ensures a consistent look throughout the progression.
Color start_color = palette.active_window_border1();
Color end_color = palette.active_window_border2();
painter.fill_rect_with_gradient(rect, start_color, end_color);
if (!text.is_null()) {
painter.draw_text(rect.translated(1, 1), text, TextAlignment::Center, Color::Black);
painter.draw_text(rect, text, TextAlignment::Center, palette.base_text());
}
float range_size = max - min;
float progress = (value - min) / range_size;
// Then we carve out a hole in the remaining part of the widget.
// We draw the text a third time, clipped and inverse, for sharp contrast.
float progress_width = progress * rect.width();
Rect hole_rect { (int)progress_width, 0, (int)(rect.width() - progress_width), rect.height() };
hole_rect.move_by(rect.location());
hole_rect.set_right_without_resize(rect.right());
PainterStateSaver saver(painter);
painter.fill_rect(hole_rect, palette.base());
painter.add_clip_rect(hole_rect);
if (!text.is_null())
painter.draw_text(rect.translated(0, 0), text, TextAlignment::Center, palette.base_text());
}