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| -rw-r--r-- | plugins/eg-sampler.lv2/sampler_ui.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/plugins/eg-sampler.lv2/sampler_ui.c b/plugins/eg-sampler.lv2/sampler_ui.c new file mode 100644 index 0000000..1895f22 --- /dev/null +++ b/plugins/eg-sampler.lv2/sampler_ui.c @@ -0,0 +1,181 @@ +/* + LV2 Sampler Example Plugin UI + Copyright 2011 David Robillard <d@drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +/** + @file ui.c Sampler Plugin UI +*/ + +#include <stdlib.h> + +#include <gtk/gtk.h> + +#include "lv2/lv2plug.in/ns/ext/atom/atom-helpers.h" +#include "lv2/lv2plug.in/ns/ext/atom/atom.h" +#include "lv2/lv2plug.in/ns/ext/uri-map/uri-map.h" +#include "lv2/lv2plug.in/ns/extensions/ui/ui.h" + +#define NS_ATOM "http://lv2plug.in/ns/ext/atom#" + +#define SAMPLER_URI "http://lv2plug.in/plugins/eg-sampler" +#define SAMPLER_UI_URI "http://lv2plug.in/plugins/eg-sampler#ui" +#define MIDI_EVENT_URI "http://lv2plug.in/ns/ext/midi#MidiEvent" +#define FILENAME_URI SAMPLER_URI "#filename" +#define STRING_BUF 8192 + +typedef struct { + LV2_URI_Map_Feature* uri_map; + + LV2UI_Write_Function write; + LV2UI_Controller controller; + + GtkWidget* button; +} SamplerUI; + +static uint32_t +uri_to_id(SamplerUI* ui, const char* uri) +{ + return ui->uri_map->uri_to_id(ui->uri_map->callback_data, + NULL, uri); +} + +static void +on_load_clicked(GtkWidget* widget, + void* handle) +{ + SamplerUI* ui = (SamplerUI*)handle; + + GtkWidget* dialog = gtk_file_chooser_dialog_new( + "Load Sample", + NULL, + GTK_FILE_CHOOSER_ACTION_OPEN, + GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, + GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT, + NULL); + + if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) { + char* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog)); + const size_t filename_len = strlen(filename); + fprintf(stderr, "LOAD SAMPLE %s\n", filename); + const size_t msg_size = sizeof(LV2_Atom) + + sizeof(LV2_Object) + + sizeof(LV2_Atom_Property) + + filename_len + 1;; + + uint8_t buf[msg_size]; + LV2_Atom* msg = (LV2_Atom*)buf; + + msg->type = uri_to_id(ui, NS_ATOM "Blank"); + msg->size = 0; + LV2_Object* obj = (LV2_Object*)msg->body; + obj->context = 0; + obj->id = 0; + + lv2_atom_append_property(msg, + uri_to_id(ui, FILENAME_URI), + uri_to_id(ui, NS_ATOM "String"), + filename_len + 1, + (const uint8_t*)filename); + + //ui->write(ui->controller, + // 0, + + + + } +} + +static LV2UI_Handle +instantiate(const LV2UI_Descriptor* descriptor, + const char* plugin_uri, + const char* bundle_path, + LV2UI_Write_Function write_function, + LV2UI_Controller controller, + LV2UI_Widget* widget, + const LV2_Feature* const* features) +{ + SamplerUI* ui = (SamplerUI*)malloc(sizeof(SamplerUI)); + ui->uri_map = NULL; + ui->write = write_function; + ui->controller = controller; + ui->button = NULL; + + *widget = NULL; + + for (int i = 0; features[i]; ++i) { + if (strcmp(features[i]->URI, LV2_URI_MAP_URI) == 0) { + ui->uri_map = (LV2_URI_Map_Feature*)features[i]->data; + } + } + + if (!ui->uri_map) { + fprintf(stderr, "sampler_ui: Host does not support uri-map\n"); + free(ui); + return NULL; + } + + ui->button = gtk_button_new_with_label("Load Sample"); + g_signal_connect(ui->button, "clicked", + G_CALLBACK(on_load_clicked), + ui); + + *widget = ui->button; + + return ui; +} + +static void +cleanup(LV2UI_Handle handle) +{ + SamplerUI* ui = (SamplerUI*)handle; + gtk_widget_destroy(ui->button); + free(ui); +} + +static void +port_event(LV2UI_Handle handle, + uint32_t port_index, + uint32_t buffer_size, + uint32_t format, + const void* buffer) +{ +} + +const void* +extension_data(const char* uri) +{ + return NULL; +} + +static const LV2UI_Descriptor descriptor = { + SAMPLER_UI_URI, + instantiate, + cleanup, + port_event, + extension_data +}; + +LV2_SYMBOL_EXPORT +const LV2UI_Descriptor* +lv2ui_descriptor(uint32_t index) +{ + switch (index) { + case 0: + return &descriptor; + default: + return NULL; + } +} |