From 5ae0871d6e950f5afad17c01362b9d95ecec6a9d Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Thu, 3 Sep 2015 15:05:32 +0200
Subject: gl: Cut, copy, and paste in text fields.

---
 platform/gl/gl-app.h   |  1 +
 platform/gl/gl-input.c | 52 +++++++++++++++++++++++++++++++++++++-------------
 platform/gl/gl-main.c  |  3 +--
 3 files changed, 41 insertions(+), 15 deletions(-)

diff --git a/platform/gl/gl-app.h b/platform/gl/gl-app.h
index 37b7941a..2a16cfdb 100644
--- a/platform/gl/gl-app.h
+++ b/platform/gl/gl-app.h
@@ -2,6 +2,7 @@
 #include <GLFW/glfw3.h>
 
 extern fz_context *ctx;
+extern GLFWwindow *window;
 
 enum
 {
diff --git a/platform/gl/gl-input.c b/platform/gl/gl-input.c
index 93f6b897..0788eca2 100644
--- a/platform/gl/gl-input.c
+++ b/platform/gl/gl-input.c
@@ -90,6 +90,21 @@ static void ui_input_delete_selection(struct input *input)
 	input->p = input->q = p;
 }
 
+static void ui_input_paste(struct input *input, const char *buf, int n)
+{
+	if (input->p != input->q)
+		ui_input_delete_selection(input);
+	if (input->end + n + 1 < input->text + sizeof(input->text))
+	{
+		memmove(input->p + n, input->p, input->end - input->p);
+		memmove(input->p, buf, n);
+		input->p += n;
+		input->end += n;
+		*input->end = 0;
+	}
+	input->q = input->p;
+}
+
 static int ui_input_key(struct input *input)
 {
 	switch (ui.key)
@@ -228,25 +243,36 @@ static int ui_input_key(struct input *input)
 	case KEY_CTL_U:
 		input->p = input->q = input->end = input->text;
 		break;
+	case KEY_CTL_C:
+	case KEY_CTL_X:
+		if (input->p != input->q)
+		{
+			char buf[sizeof input->text];
+			char *p = input->p < input->q ? input->p : input->q;
+			char *q = input->p > input->q ? input->p : input->q;
+			memmove(buf, p, q - p);
+			buf[q-p] = 0;
+			glfwSetClipboardString(window, buf);
+			if (ui.key == KEY_CTL_X)
+				ui_input_delete_selection(input);
+		}
+		break;
+	case KEY_CTL_V:
+		{
+			const char *buf = glfwGetClipboardString(window);
+			if (buf)
+				ui_input_paste(input, buf, strlen(buf));
+		}
+		break;
 	default:
 		if (ui.key >= 32)
 		{
 			int cat = ucdn_get_general_category(ui.key);
 			if (ui.key == ' ' || (cat >= UCDN_GENERAL_CATEGORY_LL && cat < UCDN_GENERAL_CATEGORY_ZL))
 			{
-				if (input->p != input->q)
-					ui_input_delete_selection(input);
-				if (input->end < input->text + nelem(input->text) - 1)
-				{
-					char buf[8];
-					int n = fz_runetochar(buf, ui.key);
-					memmove(input->p + n, input->p, input->end - input->p);
-					memmove(input->p, buf, n);
-					input->p += n;
-					input->end += n;
-					*input->end = 0;
-				}
-				input->q = input->p;
+				char buf[8];
+				int n = fz_runetochar(buf, ui.key);
+				ui_input_paste(input, buf, n);
 			}
 		}
 		break;
diff --git a/platform/gl/gl-main.c b/platform/gl/gl-main.c
index 8acb0baa..88eaf5b0 100644
--- a/platform/gl/gl-main.c
+++ b/platform/gl/gl-main.c
@@ -9,8 +9,7 @@
 
 struct ui ui;
 fz_context *ctx = NULL;
-
-static GLFWwindow *window;
+GLFWwindow *window = NULL;
 
 /* OpenGL capabilities */
 static int has_ARB_texture_non_power_of_two = 1;
-- 
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