wip: add clipboard support

programs/src/wordprocessor/input.cpp

@@ -6,6 +6,7 @@
 
 #include "wordprocessor.hpp"
 #include <gui/dialogs.hpp>
+#include <gui/clipboard.hpp>
 
 static void wp_set_status(WordProcessorState* wp, const char* msg) {
     if (!msg) msg = "";
@@ -13,6 +14,57 @@ static void wp_set_status(WordProcessorState* wp, const char* msg) {
     wp->status_msg[sizeof(wp->status_msg) - 1] = '\0';
 }
 
+static bool wp_copy_selection_to_clipboard(WordProcessorState* wp) {
+    int len = 0;
+    char* text = wp_selection_plain_text_alloc(wp, &len);
+    if (text == nullptr || len <= 0) {
+        if (text) montauk::mfree(text);
+        wp_set_status(wp, "Nothing selected");
+        return false;
+    }
+
+    bool ok = gui::clipboard_set_text(text, len);
+    montauk::mfree(text);
+    if (!ok) {
+        wp_set_status(wp, "Copy failed");
+        return false;
+    }
+
+    wp_set_status(wp, "Copied selection");
+    return true;
+}
+
+static bool wp_cut_selection_to_clipboard(WordProcessorState* wp) {
+    if (!wp_copy_selection_to_clipboard(wp))
+        return false;
+
+    wp_delete_selection(wp);
+    wp_history_checkpoint(wp);
+    wp_set_status(wp, "Cut selection");
+    return true;
+}
+
+static bool wp_paste_from_clipboard(WordProcessorState* wp) {
+    int len = 0;
+    char* text = gui::clipboard_get_text_alloc(&len);
+    if (text == nullptr || len <= 0) {
+        if (text) montauk::mfree(text);
+        wp_set_status(wp, "Clipboard is empty");
+        return false;
+    }
+
+    bool ok = wp_replace_selection_with_text(wp, text, len);
+    montauk::mfree(text);
+    if (!ok) {
+        wp_set_status(wp, "Clipboard text could not be inserted");
+        return false;
+    }
+
+    wp_history_checkpoint(wp);
+    wp_set_status(wp, "Pasted clipboard");
+    return true;
+}
+
 static void wp_open_pathbar_for_open(WordProcessorState* wp) {
     char path[256] = {};
     char msg[160] = {};
@@ -584,6 +636,19 @@ void wp_handle_key(const Montauk::KeyEvent& key) {
         return;
     }
 
+    if (key.ctrl && !key.alt && (key.ascii == 'c' || key.ascii == 'C')) {
+        wp_copy_selection_to_clipboard(wp);
+        return;
+    }
+    if (key.ctrl && !key.alt && (key.ascii == 'x' || key.ascii == 'X')) {
+        wp_cut_selection_to_clipboard(wp);
+        return;
+    }
+    if (key.ctrl && !key.alt && (key.ascii == 'v' || key.ascii == 'V')) {
+        wp_paste_from_clipboard(wp);
+        return;
+    }
+
     if (key.scancode == 0x48) {
         if (key.shift) wp_start_selection(wp);
         else wp_clear_selection(wp);