125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
// somebar - dwl bar
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// See LICENSE file for copyright and license details.
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#include <QColor>
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#include <QImage>
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#include <QPainter>
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#include "bar.hpp"
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#include "config.hpp"
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const zwlr_layer_surface_v1_listener Bar::_layerSurfaceListener = {
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[](void *owner, zwlr_layer_surface_v1*, uint32_t serial, uint32_t width, uint32_t height)
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{
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static_cast<Bar*>(owner)->layerSurfaceConfigure(serial, width, height);
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}
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};
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static QFont getFont()
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{
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QFont font {fontFamily, fontSizePt};
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font.setBold(fontBold);
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return font;
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}
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Bar::Bar(const wl_output *output)
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: _font {getFont()}
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, _fontMetrics {_font}
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{
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_surface = wl_compositor_create_surface(compositor);
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_layerSurface = zwlr_layer_shell_v1_get_layer_surface(wlrLayerShell,
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_surface, nullptr, ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM, "net.tapesoftware.Somebar");
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zwlr_layer_surface_v1_add_listener(_layerSurface, &_layerSurfaceListener, this);
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auto anchor = topbar ? ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP : ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
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zwlr_layer_surface_v1_set_anchor(_layerSurface,
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anchor | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
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auto barSize = _fontMetrics.ascent() + _fontMetrics.descent() + paddingY * 2;
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_textY = _fontMetrics.ascent() + paddingY;
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zwlr_layer_surface_v1_set_size(_layerSurface, 0, barSize);
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zwlr_layer_surface_v1_set_exclusive_zone(_layerSurface, barSize);
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wl_surface_commit(_surface);
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for (auto i=1; i<=4; i++) {
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_tags.push_back({ QString::number(i), i%2 == 0 });
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}
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_windowTitle = "Window title";
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_status = "Status";
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}
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Bar::~Bar()
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{
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wl_surface_destroy(_surface);
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zwlr_layer_surface_v1_destroy(_layerSurface);
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}
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void Bar::layerSurfaceConfigure(uint32_t serial, uint32_t width, uint32_t height)
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{
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zwlr_layer_surface_v1_ack_configure(_layerSurface, serial);
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_bufs.emplace(width, height, WL_SHM_FORMAT_XRGB8888);
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render();
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}
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void Bar::render()
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{
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auto img = QImage {
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_bufs->data(),
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_bufs->width,
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_bufs->height,
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_bufs->stride,
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QImage::Format_ARGB32
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};
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auto painter = QPainter {&img};
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_painter = &painter;
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_x = 0;
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painter.setFont(_font);
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setColorScheme(colorActive);
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painter.fillRect(0, 0, img.width(), img.height(), painter.brush());
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renderTags();
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setColorScheme(colorActive);
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renderText(_windowTitle);
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renderStatus();
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_painter = nullptr;
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wl_surface_attach(_surface, _bufs->buffer(), 0, 0);
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wl_surface_commit(_surface);
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_bufs->flip();
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}
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void Bar::setColorScheme(const ColorScheme &scheme)
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{
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_painter->setBrush(QBrush {scheme.bg});
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_painter->setPen(QPen {QBrush {scheme.fg}, 1});
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}
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void Bar::renderTags()
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{
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for (const auto &tag : _tags) {
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setColorScheme(tag.active ? colorActive : colorInactive);
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renderText(tag.name);
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}
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}
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void Bar::renderText(const QString &text)
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{
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auto size = textWidth(text) + paddingX*2;
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_painter->fillRect(_x, 0, size, _bufs->height, _painter->brush());
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_painter->drawText(paddingX+_x, _textY, text);
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_x += size;
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}
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void Bar::renderStatus()
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{
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auto size = textWidth(_status) + paddingX*2;
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_x = _bufs->width - size;
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_painter->fillRect(_x, 0, size, _bufs->height, _painter->brush());
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_painter->drawText(paddingX+_x, _textY, _status);
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_x = _bufs->width;
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}
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int Bar::textWidth(const QString &text)
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{
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return _fontMetrics.size(Qt::TextSingleLine, text).width();
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}
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