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#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include "../block.h"
#include "../format.h"
#include "../any_log.h"
typedef enum {
KNOB_NONE,
KNOB_CIRCLE,
//KNOB_CAPSULE,
KNOB_TRIANGLE,
//KNOB_TRIANGLE_UP,
//KNOB_TRIANGLE_DOWN,
//KNOB_TRIANGLE_LEFT,
//KNOB_TRIANGLE_RIGHT,
} block_slider_knob_t;
typedef struct {
block_spec_t block;
int value;
unsigned int height;
unsigned int width;
unsigned int line_width;
gradient_t bar_color;
gradient_t line_color;
gradient_t bg_color;
bool seekable;
block_slider_knob_t knob;
unsigned int knob_height;
unsigned int knob_line_width;
int knob_x_offset;
int knob_y_offset;
gradient_t knob_color;
gradient_t knob_line_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 radius = slider->height / 2;
int bar_y = layout->y + (layout->height - slider->height) / 2;
int bar_x = layout->x + (layout->width - slider->width) / 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) {
render_capsule_fast(cr, bar_x, bar_y, slider->width, radius, radius);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_fill(cr);
}
pattern = slider->bar_color.pattern;
if (pattern != NULL) {
int current = slider->width * (slider->value / 100.0);
render_capsule(cr, bar_x, bar_y, current, radius, radius);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_fill(cr);
}
pattern = slider->line_color.pattern;
if (pattern != NULL) {
int line_radius = radius - slider->line_width / 2;
render_capsule_fast(cr, bar_x, bar_y, slider->width, radius, line_radius);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_set_line_width(cr, slider->line_width);
cairo_stroke(cr);
}
if (slider->knob == KNOB_NONE) return;
int knob_height = slider->knob_height != 0 ? slider->knob_height : slider->height;
int knob_radius = knob_height / 2;
const double sqrt3 = 1.7320508075688772;
int knob_width = slider->knob == KNOB_TRIANGLE
? (knob_height * sqrt3) / 2.0
: knob_height;
// FIXME
int current = (slider->width - knob_width) * slider->value / 100.0;
int knob_x = bar_x + slider->knob_x_offset + current;
int knob_y = bar_y + slider->knob_y_offset + radius - knob_radius;
pattern = slider->knob_color.pattern;
if (pattern != NULL) {
if (slider->knob == KNOB_TRIANGLE)
render_triangle(cr, knob_x, knob_y, knob_width, knob_height);
else if (slider->knob == KNOB_CIRCLE)
render_capsule(cr, knob_x, knob_y, knob_width, knob_radius, knob_radius);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_fill(cr);
}
pattern = slider->knob_line_color.pattern;
if (pattern != NULL) {
int line_radius = knob_radius - slider->knob_line_width / 2;
if (slider->knob == KNOB_TRIANGLE)
render_triangle(cr, knob_x, knob_y, knob_width, knob_height);
else if (slider->knob == KNOB_CIRCLE)
render_capsule(cr, knob_x, knob_y, knob_width, knob_radius, line_radius);
cairo_pattern_set_matrix(pattern, &matrix);
cairo_set_source(cr, pattern);
cairo_set_line_width(cr, slider->knob_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 value = slider->value;
if (!slider->seekable) return;
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);
slider->value = value;
}
} else if (event_is_scroll(event)) {
int step = event.type == EVENT_SCROLL_DOWN ? -1 : 1;
slider->value += step;
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)
{
block->type = BLOCK_SPEC;
block_slider_t *slider = (block_slider_t *)block;
slider->block.layout_fn = block_slider_layout;
slider->block.render_fn = block_slider_render;
slider->block.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;
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;
}
static config_enum_t knob_shape_enum[] = {
{ "none", KNOB_NONE },
{ "circle", KNOB_CIRCLE },
//{ "capsule", KNOB_CAPSULE },
{ "triangle", KNOB_TRIANGLE },
{ 0 },
};
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_INT, NULL, offsetof(block_slider_t, value) },
{ "seekable", CONFIG_BOOL, NULL, offsetof(block_slider_t, seekable) },
{ "knob", CONFIG_ENUM, knob_shape_enum, offsetof(block_slider_t, knob) },
{ "knob-height", CONFIG_UINT, NULL, offsetof(block_slider_t, knob_height) },
{ "knob-line-width", CONFIG_UINT, NULL, offsetof(block_slider_t, knob_line_width) },
{ "knob-color", CONFIG_GRADIENT, NULL, offsetof(block_slider_t, knob_color) },
{ "knob-line-color", CONFIG_GRADIENT, NULL, offsetof(block_slider_t, knob_line_color) },
{ "knob-x-offset", CONFIG_INT, NULL, offsetof(block_slider_t, knob_x_offset) },
{ "knob-y-offset", CONFIG_INT, NULL, offsetof(block_slider_t, knob_y_offset) },
{ 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,
};
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