From 0e71af11a27631e45c0160842e4498507420eff0 Mon Sep 17 00:00:00 2001 From: stkhan Date: Fri, 31 Mar 2023 19:42:29 -0500 Subject: bar and blocks --- wm/somebar/src/bar.cpp | 315 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 315 insertions(+) create mode 100644 wm/somebar/src/bar.cpp (limited to 'wm/somebar/src/bar.cpp') diff --git a/wm/somebar/src/bar.cpp b/wm/somebar/src/bar.cpp new file mode 100644 index 0000000..507ce62 --- /dev/null +++ b/wm/somebar/src/bar.cpp @@ -0,0 +1,315 @@ +// somebar - dwl barbar +// See LICENSE file for copyright and license details. + +#include +#include +#include "bar.hpp" +#include "cairo.h" +#include "config.hpp" +#include "pango/pango-font.h" +#include "pango/pango-fontmap.h" +#include "pango/pango-layout.h" + +const zwlr_layer_surface_v1_listener Bar::_layerSurfaceListener = { + [](void* owner, zwlr_layer_surface_v1*, uint32_t serial, uint32_t width, uint32_t height) + { + static_cast(owner)->layerSurfaceConfigure(serial, width, height); + } +}; +const wl_callback_listener Bar::_frameListener = { + [](void* owner, wl_callback* cb, uint32_t) + { + static_cast(owner)->render(); + wl_callback_destroy(cb); + } +}; + +struct Font { + PangoFontDescription* description; + int height {0}; +}; +static Font getFont() +{ + auto fontMap = pango_cairo_font_map_get_default(); + if (!fontMap) { + die("pango_cairo_font_map_get_default"); + } + auto fontDesc = pango_font_description_from_string(font); + if (!fontDesc) { + die("pango_font_description_from_string"); + } + auto tempContext = pango_font_map_create_context(fontMap); + if (!tempContext) { + die("pango_font_map_create_context"); + } + auto font = pango_font_map_load_font(fontMap, tempContext, fontDesc); + if (!font) { + die("pango_font_map_load_font"); + } + auto metrics = pango_font_get_metrics(font, pango_language_get_default()); + if (!metrics) { + die("pango_font_get_metrics"); + } + + auto res = Font {}; + res.description = fontDesc; + res.height = PANGO_PIXELS(pango_font_metrics_get_height(metrics)); + + pango_font_metrics_unref(metrics); + g_object_unref(font); + g_object_unref(tempContext); + return res; +} +static Font barfont = getFont(); + +BarComponent::BarComponent() { } +BarComponent::BarComponent(wl_unique_ptr layout) + : pangoLayout {std::move(layout)} +{ +} + +int BarComponent::width() const +{ + int w, h; + pango_layout_get_size(pangoLayout.get(), &w, &h); + return PANGO_PIXELS(w); +} + +void BarComponent::setText(const std::string& text) +{ + _text = std::make_unique(text); + pango_layout_set_text(pangoLayout.get(), _text->c_str(), _text->size()); +} + +Bar::Bar() +{ + _pangoContext.reset(pango_font_map_create_context(pango_cairo_font_map_get_default())); + if (!_pangoContext) { + die("pango_font_map_create_context"); + } + for (const auto& tagName : tagNames) { + _tags.push_back({ TagState::None, 0, 0, createComponent(tagName) }); + } + _layoutCmp = createComponent(); + _titleCmp = createComponent(); + _statusCmp = createComponent(); +} + +const wl_surface* Bar::surface() const +{ + return _surface.get(); +} + +bool Bar::visible() const +{ + return _surface.get(); +} + +void Bar::show(wl_output* output) +{ + if (visible()) { + return; + } + _surface.reset(wl_compositor_create_surface(compositor)); + _layerSurface.reset(zwlr_layer_shell_v1_get_layer_surface(wlrLayerShell, + _surface.get(), output, ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM, "net.tapesoftware.Somebar")); + zwlr_layer_surface_v1_add_listener(_layerSurface.get(), &_layerSurfaceListener, this); + auto anchor = topbar ? ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP : ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM; + zwlr_layer_surface_v1_set_anchor(_layerSurface.get(), + anchor | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT); + + auto barSize = barfont.height + paddingY * 2; + zwlr_layer_surface_v1_set_size(_layerSurface.get(), 0, barSize); + zwlr_layer_surface_v1_set_exclusive_zone(_layerSurface.get(), barSize); + wl_surface_commit(_surface.get()); +} + +void Bar::hide() +{ + if (!visible()) { + return; + } + _layerSurface.reset(); + _surface.reset(); + _bufs.reset(); +} + +void Bar::setTag(int tag, int state, int numClients, int focusedClient) +{ + auto& t = _tags[tag]; + t.state = state; + t.numClients = numClients; + t.focusedClient = focusedClient; +} + +void Bar::setSelected(bool selected) +{ + _selected = selected; +} +void Bar::setLayout(const std::string& layout) +{ + _layoutCmp.setText(layout); +} +void Bar::setTitle(const std::string& title) +{ + _titleCmp.setText(title); +} +void Bar::setStatus(const std::string& status) +{ + _statusCmp.setText(status); +} + +void Bar::invalidate() +{ + if (_invalid || !visible()) { + return; + } + _invalid = true; + auto frame = wl_surface_frame(_surface.get()); + wl_callback_add_listener(frame, &_frameListener, this); + wl_surface_commit(_surface.get()); +} + +void Bar::click(Monitor* mon, int x, int, int btn) +{ + Arg arg = {0}; + Arg* argp = nullptr; + int control = ClkNone; + if (x > _statusCmp.x) { + control = ClkStatusText; + } else if (x > _titleCmp.x) { + control = ClkWinTitle; + } else if (x > _layoutCmp.x) { + control = ClkLayoutSymbol; + } else for (auto tag = _tags.size()-1; tag >= 0; tag--) { + if (x > _tags[tag].component.x) { + control = ClkTagBar; + arg.ui = 1<width && height == _bufs->height) { + return; + } + _bufs.emplace(width, height, WL_SHM_FORMAT_XRGB8888); + render(); +} + +void Bar::render() +{ + if (!_bufs) { + return; + } + auto img = wl_unique_ptr {cairo_image_surface_create_for_data( + _bufs->data(), + CAIRO_FORMAT_ARGB32, + _bufs->width, + _bufs->height, + _bufs->stride + )}; + auto painter = wl_unique_ptr {cairo_create(img.get())}; + _painter = painter.get(); + pango_cairo_update_context(_painter, _pangoContext.get()); + _x = 0; + + renderTags(); + setColorScheme(_selected ? colorActive : colorInactive); + renderComponent(_layoutCmp); + renderComponent(_titleCmp); + renderStatus(); + + _painter = nullptr; + wl_surface_attach(_surface.get(), _bufs->buffer(), 0, 0); + wl_surface_damage(_surface.get(), 0, 0, _bufs->width, _bufs->height); + wl_surface_commit(_surface.get()); + _bufs->flip(); + _invalid = false; +} + +void Bar::renderTags() +{ + for (auto &tag : _tags) { + setColorScheme( + tag.state & TagState::Active ? colorActive : colorInactive, + tag.state & TagState::Urgent); + renderComponent(tag.component); + auto indicators = std::min(tag.numClients, static_cast(_bufs->height/2)); + for (auto ind = 0; ind < indicators; ind++) { + auto w = ind == tag.focusedClient ? 7 : 1; + cairo_move_to(_painter, tag.component.x, ind*2+0.5); + cairo_rel_line_to(_painter, w, 0); + cairo_close_path(_painter); + cairo_set_line_width(_painter, 1); + cairo_stroke(_painter); + } + } +} + +void Bar::renderStatus() +{ + pango_cairo_update_layout(_painter, _statusCmp.pangoLayout.get()); + beginBg(); + auto start = _bufs->width - _statusCmp.width() - paddingX*2; + cairo_rectangle(_painter, _x, 0, _bufs->width-_x+start, _bufs->height); + cairo_fill(_painter); + + _x = start; + renderComponent(_statusCmp); +} + +void Bar::setColorScheme(const ColorScheme& scheme, bool invert) +{ + _colorScheme = invert + ? ColorScheme {scheme.bg, scheme.fg} + : ColorScheme {scheme.fg, scheme.bg}; +} +static void setColor(cairo_t* painter, const Color& color) +{ + cairo_set_source_rgba(painter, + color.r/255.0, color.g/255.0, color.b/255.0, color.a/255.0); +} +void Bar::beginFg() +{ + setColor(_painter, _colorScheme.fg); +} +void Bar::beginBg() +{ + setColor(_painter, _colorScheme.bg); +} + +void Bar::renderComponent(BarComponent& component) +{ + pango_cairo_update_layout(_painter, component.pangoLayout.get()); + auto size = component.width() + paddingX*2; + component.x = _x; + + beginBg(); + cairo_rectangle(_painter, _x, 0, size, _bufs->height); + cairo_fill(_painter); + cairo_move_to(_painter, _x+paddingX, paddingY); + + beginFg(); + pango_cairo_show_layout(_painter, component.pangoLayout.get()); + _x += size; +} + +BarComponent Bar::createComponent(const std::string &initial) +{ + auto layout = pango_layout_new(_pangoContext.get()); + pango_layout_set_font_description(layout, barfont.description); + auto res = BarComponent {wl_unique_ptr {layout}}; + res.setText(initial); + return res; +} -- cgit v1.2.3