From 3049e4b1e3e6b36812be84cf794b55b019380c63 Mon Sep 17 00:00:00 2001
From: Federico Angelilli <code@fedang.net>
Date: Thu, 21 Nov 2024 01:11:11 +0100
Subject: Add mouse scroll event

---
 src/blocks/slider.c | 42 ++++++++++++++++++++++++++----------------
 1 file changed, 26 insertions(+), 16 deletions(-)

(limited to 'src/blocks')

diff --git a/src/blocks/slider.c b/src/blocks/slider.c
index 82d6140..b01ddb7 100644
--- a/src/blocks/slider.c
+++ b/src/blocks/slider.c
@@ -9,7 +9,7 @@
 
 typedef struct {
     block_spec_t block;
-    unsigned int value;
+    int value;
     unsigned int height;
     unsigned int width;
     unsigned int line_width;
@@ -71,24 +71,30 @@ static void block_slider_render(layout_t *layout, cairo_t *cr)
 static void block_slider_event(layout_t *layout, event_t event)
 {
     block_slider_t *slider = (block_slider_t *)layout->block;
+    int value = slider->value;
 
     if (!slider->seekable) return;
 
-    int bar_y = layout->y + (layout->height - slider->height) / 2;
-    int bar_x = layout->x + (layout->width - slider->width) / 2;
+    if (event_is_click(event)) {
+        int bar_x = layout->x + (layout->width - slider->width) / 2;
+        int bar_y = layout->y + (layout->height - slider->height) / 2;
 
-    if (check_capsule(event.x, event.y, bar_x, bar_y, slider->width, slider->height)) {
-        int value = 100 * (event.x - bar_x) / (double)(slider->width - 1);
+        if (check_capsule(event.x, event.y, bar_x, bar_y, slider->width, slider->height)) {
+            int value = 100 * (event.x - bar_x) / (double)(slider->width - 1);
+            slider->value = value;
+        }
+    } else if (event_is_scroll(event)) {
+        int step = event.type == EVENT_SCROLL_DOWN ? -1 : 1;
+        slider->value += step;
 
-        log_value_debug("Updated slider value",
-                        "i:event_x", event.x,
-                        "i:bar_x", bar_x,
-                        "i:bar_width", slider->width,
-                        "i:old_value", slider->value,
-                        "i:new_value", value);
-
-        slider->value = value;
+        if (slider->value > 100) slider->value = 100;
+        if (slider->value < 0)   slider->value = 0;
     }
+
+    log_value_debug("Updated slider value",
+                    "s:label", layout->block->label,
+                    "i:old_value", value,
+                    "i:new_value", slider->value);
 }
 
 static void block_slider_init(block_t *block, const block_scheme_t *scheme)
@@ -110,9 +116,13 @@ static void block_slider_clean(block_t *block)
 
 static int block_slider_validate(block_t *block, const block_scheme_t *scheme)
 {
-    //block_slider_t *slider = (block_slider_t *)block;
+    block_slider_t *slider = (block_slider_t *)block;
     int errors = 0;
-    // TODO
+
+    if (slider->value < 0 || slider->value > 100) {
+        log_error("Block '%s' requires '%s' to be between 0 and 100", block->label, "bar-value");
+        errors++;
+    }
 
     return errors;
 }
@@ -125,7 +135,7 @@ static const config_entry_t block_slider_entries[] = {
     { "bar-height",     CONFIG_UINT,     NULL, offsetof(block_slider_t, height) },
     { "bar-width",      CONFIG_UINT,     NULL, offsetof(block_slider_t, width) },
     { "bar-line-width", CONFIG_UINT,     NULL, offsetof(block_slider_t, line_width) },
-    { "bar-value",      CONFIG_UINT,     NULL, offsetof(block_slider_t, value) },
+    { "bar-value",      CONFIG_INT,      NULL, offsetof(block_slider_t, value) },
     { "seekable",       CONFIG_BOOL,     NULL, offsetof(block_slider_t, seekable) },
     { 0 },
 };
-- 
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