Start working on slider block

1 files changed, 128 insertions, 0 deletions

diff --git a/src/blocks/slider.c b/src/blocks/slider.c
new file mode 100644
index 0000000..708fdca
--- /dev/null
+++ b/src/blocks/slider.c
@@ -0,0 +1,128 @@
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include "../block.h"
+#include "../format.h"
+#include "../any_log.h"
+
+typedef struct {
+    block_spec_t block;
+    unsigned int value;
+    unsigned int height;
+    unsigned int width;
+    unsigned int line_width;
+    gradient_t bar_color;
+    gradient_t line_color;
+    gradient_t bg_color;
+} block_slider_t;
+
+static void block_slider_layout(block_t *block, layout_t *layout, layout_info_t info)
+{
+    block_slider_t *slider = (block_slider_t *)block;
+    layout->width = info.height + slider->width;
+}
+
+static void block_slider_render(layout_t *layout, cairo_t *cr)
+{
+    block_slider_t *slider = (block_slider_t *)layout->block;
+
+    int bar_y = layout->y + (layout->height - slider->height) / 2;
+    int bar_x = layout->x + layout->height / 2;
+
+    cairo_matrix_t matrix;
+    cairo_matrix_init_scale(&matrix, 1.0 / slider->width, 1.0);
+    cairo_matrix_translate(&matrix, -bar_x, 0.0);
+
+    cairo_pattern_t *pattern = slider->bg_color.pattern;
+    if (pattern != NULL) {
+        cairo_rectangle(cr, bar_x, bar_y, slider->width, slider->height);
+
+        cairo_pattern_set_matrix(pattern, &matrix);
+        cairo_set_source(cr, pattern);
+        cairo_fill(cr);
+    }
+
+    pattern = slider->bar_color.pattern;
+    if (pattern != NULL) {
+        cairo_rectangle(cr, bar_x, bar_y, slider->width * (slider->value / 100.0), slider->height);
+
+        cairo_pattern_set_matrix(pattern, &matrix);
+        cairo_set_source(cr, pattern);
+        cairo_fill(cr);
+    }
+
+    pattern = slider->line_color.pattern;
+    if (pattern != NULL) {
+        cairo_rectangle(cr, bar_x, bar_y, slider->width, slider->height);
+
+        cairo_pattern_set_matrix(pattern, &matrix);
+        cairo_set_source(cr, pattern);
+        cairo_set_line_width(cr, slider->line_width);
+        cairo_stroke(cr);
+    }
+}
+
+static void block_slider_event(layout_t *layout, event_t event)
+{
+    block_slider_t *slider = (block_slider_t *)layout->block;
+
+    int bar_x = layout->x + layout->height / 2;
+    int bar_y = layout->y + (layout->height - slider->height) / 2;
+
+    log_value_debug("Clicked slider",
+                    "i:bar_x", bar_x,
+                    "i:bar_y", bar_y,
+                    "i:bar_width", slider->width,
+                    "i:bar_height", slider->height,
+                    "i:value", slider->value);
+}
+
+static void block_slider_init(block_t *block, const block_scheme_t *scheme)
+{
+    block->type = BLOCK_SPEC;
+
+    block_spec_t *spec = (block_spec_t *)block;
+    spec->layout_fn = block_slider_layout;
+    spec->render_fn = block_slider_render;
+    spec->event_fn = block_slider_event;
+}
+
+static void block_slider_clean(block_t *block)
+{
+    block_slider_t *slider = (block_slider_t *)block;
+    gradient_free(&slider->bar_color);
+    gradient_free(&slider->line_color);
+    gradient_free(&slider->bg_color);
+}
+
+static int block_slider_validate(block_t *block, const block_scheme_t *scheme)
+{
+    //block_slider_t *slider = (block_slider_t *)block;
+    int errors = 0;
+    // TODO
+
+    return errors;
+}
+
+static const config_entry_t block_slider_entries[] = {
+    // TODO: Ugly names
+    { "bar-color",      CONFIG_GRADIENT, NULL, offsetof(block_slider_t, bar_color) },
+    { "bar-line-color", CONFIG_GRADIENT, NULL, offsetof(block_slider_t, line_color) },
+    { "bar-bg-color",   CONFIG_GRADIENT, NULL, offsetof(block_slider_t, bg_color) },
+    { "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) },
+    { 0 },
+};
+
+const block_scheme_t block_slider_scheme = {
+    .name = "slider",
+    .entries = block_slider_entries,
+    .size = sizeof(block_slider_t),
+    .init_fn = block_slider_init,
+    .clean_fn = block_slider_clean,
+    .validate_fn = block_slider_validate,
+};