From a535703add6bf29878845cb270997514489cfc16 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Wed, 31 Oct 2018 18:12:49 +0100
Subject: Start with images/gif, resize chat input

---
 src/ChatWindow.cpp | 59 +++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 52 insertions(+), 7 deletions(-)

(limited to 'src/ChatWindow.cpp')

diff --git a/src/ChatWindow.cpp b/src/ChatWindow.cpp
index b0bb696..041d2c3 100644
--- a/src/ChatWindow.cpp
+++ b/src/ChatWindow.cpp
@@ -1,6 +1,8 @@
 #include "../include/ChatWindow.hpp"
 #include "../include/ChatMessage.hpp"
 #include <gtkmm/alignment.h>
+#include <gtkmm/viewport.h>
+#include <gtkmm/scrollbar.h>
 #include <cassert>
 
 namespace dchat
@@ -82,23 +84,66 @@ namespace dchat
 
     void ChatWindow::setupMessageArea(Gtk::Grid *rightPanel)
     {
-        chatArea.set_vexpand(true);
-        chatArea.set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_AUTOMATIC);
-        rightPanel->attach(chatArea, 0, 0, 1, 2);
+        //messageArea.set_valign(Gtk::ALIGN_START);
+        messageArea.set_vexpand(true);
+        messageArea.set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_AUTOMATIC);
+        rightPanel->attach(messageArea, 0, 0, 1, 2);
 
-        chatAreaLayout.set_name("chat-area-layout");
-        chatArea.add(chatAreaLayout);
+        messageAreaLayout.set_name("chat-area-layout");
+        messageArea.add(messageAreaLayout);
     }
 
     void ChatWindow::setupChatInput(Gtk::Grid *rightPanel)
     {
+        Gtk::Grid *chatArea = Gtk::manage(new Gtk::Grid());
+        rightPanel->attach_next_to(*chatArea, messageArea, Gtk::POS_BOTTOM, 1, 1);
+
         Gtk::ScrolledWindow *chatScrollWindow = Gtk::manage(new Gtk::ScrolledWindow());
+        chatScrollWindow->set_hexpand(true);
+        chatScrollWindow->set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_NEVER);
         chatScrollWindow->set_name("chat-scroll-view");
-        rightPanel->attach_next_to(*chatScrollWindow, chatArea, Gtk::POS_BOTTOM, 1, 1);
+        chatArea->attach(*chatScrollWindow, 0, 0, 1, 1);
 
         chatInput.set_hexpand(true);
         chatInput.set_name("chat-input");
         chatInput.set_wrap_mode(Gtk::WrapMode::WRAP_WORD_CHAR);
+
+        double fontSize = 18.5;//PANGO_PIXELS(chatInput.get_style_context()->get_font().get_size());
+        chatPrevNumLines = 1;
+        chatInput.get_buffer()->signal_changed().connect([this, chatScrollWindow, fontSize]
+        {
+            int numLines = chatInput.get_buffer()->get_line_count();
+            numLines = std::min(numLines, 10);
+            if(numLines != chatPrevNumLines)
+            {
+                chatPrevNumLines = numLines;
+                chatScrollWindow->set_min_content_height(fontSize * numLines);
+
+                auto adj = chatScrollWindow->get_vadjustment();
+                if(chatInput.get_buffer()->get_line_count() <= 10)
+                {
+                    chatScrollWindow->set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_NEVER);
+                    adj->set_value(0);
+                }
+                else
+                {
+                    chatScrollWindow->set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_ALWAYS);
+                }
+            }
+        });
+        chatScrollWindow->get_vadjustment()->signal_value_changed().connect([this, chatScrollWindow]()
+        {
+            auto adj = chatScrollWindow->get_vadjustment();
+            if(chatInput.get_buffer()->get_line_count() <= 11)
+            {
+                chatScrollWindow->set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_NEVER);
+                adj->set_value(0);
+            }
+            else
+            {
+                chatScrollWindow->set_policy(Gtk::PolicyType::POLICY_NEVER, Gtk::PolicyType::POLICY_ALWAYS);
+            }
+        });
         chatScrollWindow->add(chatInput);
     }
 
@@ -143,7 +188,7 @@ namespace dchat
         message->set_valign(Gtk::Align::ALIGN_START);
         message->set_hexpand(true);
         message->show_all();
-        chatAreaLayout.attach(*message, 0, it->second.messageCount, 1, 1);
+        messageAreaLayout.attach(*message, 0, it->second.messageCount, 1, 1);
         ++it->second.messageCount;
     }
 
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