Configurable colors

src/bar.cpp

@@ -44,9 +44,6 @@ void Bar::layerSurfaceConfigure(uint32_t serial, uint32_t width, uint32_t height
     _bufs.emplace(width, height, WL_SHM_FORMAT_XRGB8888);
     render();
 }
-static QBrush inactiveBg = {QColor::fromRgb(0, 0, 0)};
-static QBrush activeBg = QBrush {QColor::fromRgb(0, 0, 255)};
-static QPen fg = QPen {QBrush {QColor::fromRgb(255, 255, 255)}, 1};
 
 void Bar::render()
 {
@@ -58,29 +55,37 @@ void Bar::render()
         QImage::Format_ARGB32
     };
     auto painter = QPainter {&img};
+    _painter = &painter;
     auto font = painter.font();
     font.setBold(true);
     font.setPixelSize(18);
     painter.setFont(font);
-    painter.setPen(fg);
 
-    painter.fillRect(0, 0, img.width(), img.height(), activeBg);
+    setColorScheme(colorActive);
+    painter.fillRect(0, 0, img.width(), img.height(), painter.brush());
     _fontMetrics.emplace(painter.font());
     _textY = _fontMetrics->ascent() + paddingY;
     renderTags(painter);
     
+    _painter = nullptr;
     wl_surface_attach(_surface, _bufs->buffer(), 0, 0);
     wl_surface_commit(_surface);
     _bufs->flip();
 }
 
+void Bar::setColorScheme(const ColorScheme &scheme)
+{
+    _painter->setBrush(QBrush {scheme.bg});
+    _painter->setPen(QPen {QBrush {scheme.fg}, 1});
+}
+
 void Bar::renderTags(QPainter &painter)
 {
     auto x = 0;
     for (const auto &tag : _tags) {
         auto size = textWidth(tag.name) + paddingX*2;
-        auto& bg = tag.active ? activeBg : inactiveBg;
+        setColorScheme(tag.active ? colorActive : colorInactive);
-        painter.fillRect(x, 0, size, barSize, bg);
+        painter.fillRect(x, 0, size, barSize, _painter->brush());
         painter.drawText(paddingX+x, _textY, tag.name);
         x += size;
     }

src/bar.hpp

@@ -7,6 +7,7 @@
 #include <wayland-client.h>
 #include <QString>
 #include <QFontMetrics>
+#include <QPainter>
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 #include "common.hpp"
 #include "shm_buffer.hpp"
@@ -21,6 +22,7 @@ class Bar {
 
     wl_surface *_surface {nullptr};
     zwlr_layer_surface_v1 *_layerSurface {nullptr};
+    QPainter *_painter {nullptr};
     std::optional<QFontMetrics> _fontMetrics;
     std::optional<ShmBuffer> _bufs;
     std::vector<Tag> _tags;
@@ -30,6 +32,7 @@ class Bar {
     void render();
     void renderTags(QPainter &painter);
     int textWidth(const QString &text);
+    void setColorScheme(const ColorScheme &scheme);
 public:
     explicit Bar(const wl_output *output);
     ~Bar();

src/common.hpp

@@ -3,9 +3,14 @@
 
 #pragma once
 #include <wayland-client.h>
+#include <QColor>
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 extern wl_display *display;
 extern wl_compositor *compositor;
 extern wl_shm *shm;
 extern zwlr_layer_shell_v1 *wlrLayerShell;
+
+struct ColorScheme {
+    QColor fg, bg;
+};

src/config.hpp

@@ -1,7 +1,13 @@
 // somebar - dwl bar
 // See LICENSE file for copyright and license details.
 
+#pragma once
+#include "common.hpp"
+
 constexpr int barSize = 26;
 constexpr bool topbar = 1;
 constexpr int paddingX = 10;
 constexpr int paddingY = 3;
+
+constexpr ColorScheme colorInactive = {QColor(255, 255, 255), QColor(0, 0, 0)};
+constexpr ColorScheme colorActive = {QColor(255, 255, 255), QColor(0, 0, 255)};