From 2d60414ac711e68779829f8949eaed4770f064d6 Mon Sep 17 00:00:00 2001
From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Mon, 30 Sep 2024 00:02:50 +0200
Subject: [PATCH] show channel below quote

---
 src/app/Renderer.h | 28 ++++++++++++++++++++++++----
 src/main.cpp       |  4 +++-
 src/pango/Layout.h | 17 +++++++++++++++++
 3 files changed, 44 insertions(+), 5 deletions(-)

diff --git a/src/app/Renderer.h b/src/app/Renderer.h
index bb81c79..b31c73c 100644
--- a/src/app/Renderer.h
+++ b/src/app/Renderer.h
@@ -2,6 +2,7 @@
 #define TEST_APP_RENDERER_H_
 
 #include <cstdint>
+#include <iostream>
 extern "C" {
 #include "cairo.h"
 }
@@ -16,16 +17,22 @@ class Renderer {
 
 public:
 	Renderer(uint8_t *plane, int linesize, int width, int height)
-	: font("DejaVu Sans 32px")
+	: text_font("DejaVu Sans 32px")
+	, channel_font("DejaVu Sans 24px")
 	, surface(plane, linesize, CAIRO_FORMAT_ARGB32, width, height)
 	, ctx(surface.CreateContext())
 	, width(width)
 	, height(height)
 	, text()
-	, text_layout(ctx.CreateLayout()) {
-		text_layout.SetFont(font);
+	, text_layout(ctx.CreateLayout())
+	, channel()
+	, channel_layout(ctx.CreateLayout()) {
+		text_layout.SetFont(text_font);
 		text_layout.SetWidth(width / 2);
+		channel_layout.SetFont(channel_font);
+		channel_layout.SetWidth(width / 2);
 		SetText("Hello, I am a long text that should wrap eventually when it gets long enough to cross the halfway point of the total width available (not including the offset which is added afterwards).");
+		SetChannel("");
 	}
 	~Renderer() {
 	}
@@ -42,6 +49,10 @@ public:
 		ctx.SetSourceRGB(1, 1, 1);
 		text_layout.Render();
 
+		ctx.MoveTo(50, 50 + text_layout.GetLogicalRect().height + 10);
+		ctx.SetSourceRGB(0.392, 0.255, 0.647);
+		channel_layout.Render();
+
 		surface.Flush();
 	}
 
@@ -51,9 +62,16 @@ public:
 		text_layout.Update();
 	}
 
+	void SetChannel(const std::string &c) {
+		channel = c;
+		channel_layout.SetText(channel);
+		channel_layout.Update();
+	}
+
 
 private:
-	pango::Font font;
+	pango::Font text_font;
+	pango::Font channel_font;
 	cairo::Surface surface;
 	cairo::Context ctx;
 
@@ -62,6 +80,8 @@ private:
 
 	std::string text;
 	pango::Layout text_layout;
+	std::string channel;
+	pango::Layout channel_layout;
 
 };
 
diff --git a/src/main.cpp b/src/main.cpp
index 36f0cac..31cfa98 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -37,10 +37,12 @@ void ws_handler(void *user, const Json::Value &json) {
 	Json::Value data;
 	Json::Reader json_reader;
 	json_reader.parse(data_string, data);
-	const std::string text = data["model"]["text"].asString();
 	app::Renderer *renderer = static_cast<app::Renderer *>(user);
+	const std::string text = data["model"]["text"].asString();
+	const std::string channel = data["model"]["channel"]["title"].asString();
 	if (text.length() > 0) {
 		renderer->SetText(text);
+		renderer->SetChannel(channel);
 	}
 }
 
diff --git a/src/pango/Layout.h b/src/pango/Layout.h
index 3e52df9..c465da7 100644
--- a/src/pango/Layout.h
+++ b/src/pango/Layout.h
@@ -9,6 +9,8 @@
 #include <utility>
 
 #include "Font.h"
+#include "pango/pango-layout.h"
+#include "pango/pango-types.h"
 
 namespace pango {
 
@@ -40,6 +42,18 @@ public:
 	}
 
 public:
+	const PangoRectangle &GetInkRect() const {
+		return ink_rect;
+	}
+
+	int GetLineCount() {
+		return pango_layout_get_line_count(l);
+	}
+
+	const PangoRectangle &GetLogicalRect() const {
+		return logical_rect;
+	}
+
 	void Render() {
 		pango_cairo_show_layout(c, l);
 	}
@@ -58,11 +72,14 @@ public:
 
 	void Update() {
 		pango_cairo_update_layout(c, l);
+		pango_layout_get_pixel_extents(l, &ink_rect, &logical_rect);
 	}
 
 private:
 	cairo_t *c;
 	PangoLayout *l;
+	PangoRectangle ink_rect;
+	PangoRectangle logical_rect;
 
 };
 
-- 
2.39.2