From 0c214a8fbb2819be14b4e305f1cef3e43b1a2be8 Mon Sep 17 00:00:00 2001
From: James Magahern <james@magahern.com>
Date: Sat, 19 Jan 2019 16:49:09 -0800
Subject: Start working on accept anim

---
 meson.build  |  3 ++-
 src/main.c   | 53 +++++++++++++++++++++++++++++++++++++----------------
 src/render.c |  9 +++++++--
 src/render.h |  2 ++
 4 files changed, 48 insertions(+), 19 deletions(-)

diff --git a/meson.build b/meson.build
index 52804bb..3b5a780 100644
--- a/meson.build
+++ b/meson.build
@@ -27,5 +27,6 @@ resources = gnome.compile_resources(
 executable('buzzlocker',
   sources: sources + resources,
   dependencies: dependencies,
+  c_std: 'c11',
   install: true
-)
+)
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 6729a7f..ffbc098 100644
--- a/src/main.c
+++ b/src/main.c
@@ -15,7 +15,13 @@
 
 static const size_t kMaxPasswordLength = 128;
 
-void window_changed_size(saver_state_t *state, XConfigureEvent *event)
+static void accept_password(saver_state_t *state);
+
+/*
+ * Event handling
+ */
+
+static void window_changed_size(saver_state_t *state, XConfigureEvent *event)
 {
     state->canvas_width = event->width;
     state->canvas_height = event->height;
@@ -23,7 +29,7 @@ void window_changed_size(saver_state_t *state, XConfigureEvent *event)
     cairo_xlib_surface_set_size(state->surface, event->width, event->height);
 }
 
-void handle_key_event(saver_state_t *state, XKeyEvent *event)
+static void handle_key_event(saver_state_t *state, XKeyEvent *event)
 {
     KeySym key;
     char keybuf[8];
@@ -36,6 +42,8 @@ void handle_key_event(saver_state_t *state, XKeyEvent *event)
         if (length > 0) {
             password_buf[length - 1] = '\0';
         }
+    } else if (XK_Return == key) {
+        accept_password(state);
     } else if (strlen(keybuf) > 0) {
         size_t add_len = strlen(keybuf);
         if ( (length + add_len) < state->password_buffer_len - 1 ) {
@@ -44,7 +52,7 @@ void handle_key_event(saver_state_t *state, XKeyEvent *event)
     }
 }
 
-int poll_events(saver_state_t *state)
+static int poll_events(saver_state_t *state)
 {
     XEvent e;
     const bool block_for_next_event = false;
@@ -76,30 +84,42 @@ int poll_events(saver_state_t *state)
     return 0;
 }
 
+/*
+ * Actions
+ */
+
+static void accept_password(saver_state_t *state)
+{
+    state->cursor_animating = false;
+}
+
 /*
  * Main drawing/update routines 
  */
 
-void update(saver_state_t *state)
+static void update(saver_state_t *state)
 {
-    const double cursor_fade_speed = 0.007;
-    if (state->cursor_fade_direction > 0) {
-        state->cursor_opacity += cursor_fade_speed;
-        if (state->cursor_opacity > 1.0) {
-            state->cursor_fade_direction *= -1;
+    if (state->cursor_animating) {
+        const double cursor_fade_speed = 0.007;
+        if (state->cursor_fade_direction > 0) {
+            state->cursor_opacity += cursor_fade_speed;
+            if (state->cursor_opacity > 1.0) {
+                state->cursor_fade_direction *= -1;
+            }
+        } else {
+            state->cursor_opacity -= cursor_fade_speed;
+            if (state->cursor_opacity <= 0.0) {
+                state->cursor_fade_direction *= -1;
+            }
         }
     } else {
-        state->cursor_opacity -= cursor_fade_speed;
-        if (state->cursor_opacity <= 0.0) {
-            state->cursor_fade_direction *= -1;
-        }
+        state->cursor_opacity = 1.0;
     }
 
-
     poll_events(state);
 }
 
-void draw(saver_state_t *state)
+static void draw(saver_state_t *state)
 {
     // Draw background
     cairo_t *cr = state->ctx;
@@ -110,7 +130,7 @@ void draw(saver_state_t *state)
     draw_password_field(state);
 }
 
-int runloop(cairo_surface_t *surface)
+static int runloop(cairo_surface_t *surface)
 {
     cairo_t *cr = cairo_create(surface);
 
@@ -127,6 +147,7 @@ int runloop(cairo_surface_t *surface)
     state.status_font = status_font;
     state.password_buffer = calloc(1, kMaxPasswordLength);
     state.password_buffer_len = kMaxPasswordLength;
+    state.cursor_animating = true;
 
     // Main run loop
     struct timespec sleep_time = { 0, 5000000 };
diff --git a/src/render.c b/src/render.c
index 1439b08..214af8b 100644
--- a/src/render.c
+++ b/src/render.c
@@ -42,7 +42,6 @@ void draw_logo(saver_state_t *state)
         g_bytes_unref(bytes);
         if (error != NULL) {
             fprintf(stderr, "Error loading logo SVG\n");
-
             return;
         }
     }
@@ -132,7 +131,13 @@ void draw_password_field(saver_state_t *state)
     
     // Draw cursor
     cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, state->cursor_opacity);
-    cairo_rectangle(cr, field_x + cursor_offset_x, field_y, cursor_width, cursor_height);
+    if (state->cursor_animating) {
+        cairo_rectangle(cr, field_x + cursor_offset_x, field_y, cursor_width, cursor_height);
+    } else {
+        // Fill asterisks
+        cairo_rectangle(cr, field_x, field_y, cursor_offset_x, cursor_height);
+    }
     cairo_fill(cr);
+
 }
 
diff --git a/src/render.h b/src/render.h
index 6d2c095..5d387e6 100644
--- a/src/render.h
+++ b/src/render.h
@@ -10,6 +10,7 @@
 #include <cairo-xlib.h>
 #include <librsvg/rsvg.h>
 #include <pango/pangocairo.h>
+#include <stdbool.h>
 
 typedef struct {
     cairo_t                *ctx;
@@ -24,6 +25,7 @@ typedef struct {
     int                     canvas_width;
     int                     canvas_height;
 
+    bool                    cursor_animating;
     double                  cursor_opacity;
     double                  cursor_fade_direction;
 
-- 
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