diff options
Diffstat (limited to 'plugins/eg04-sampler.lv2/sampler_ui.c')
| -rw-r--r-- | plugins/eg04-sampler.lv2/sampler_ui.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/plugins/eg04-sampler.lv2/sampler_ui.c b/plugins/eg04-sampler.lv2/sampler_ui.c new file mode 100644 index 0000000..40922ae --- /dev/null +++ b/plugins/eg04-sampler.lv2/sampler_ui.c @@ -0,0 +1,201 @@ +/* + LV2 Sampler Example Plugin UI + Copyright 2011-2012 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.h" +#include "lv2/lv2plug.in/ns/ext/atom/forge.h" +#include "lv2/lv2plug.in/ns/ext/atom/util.h" +#include "lv2/lv2plug.in/ns/ext/patch/patch.h" +#include "lv2/lv2plug.in/ns/ext/urid/urid.h" +#include "lv2/lv2plug.in/ns/extensions/ui/ui.h" + +#include "./uris.h" + +#define SAMPLER_UI_URI "http://lv2plug.in/plugins/eg-sampler#ui" + +typedef struct { + LV2_Atom_Forge forge; + + LV2_URID_Map* map; + SamplerURIs uris; + + LV2UI_Write_Function write; + LV2UI_Controller controller; + + GtkWidget* box; + GtkWidget* button; + GtkWidget* label; +} SamplerUI; + +static void +on_load_clicked(GtkWidget* widget, + void* handle) +{ + SamplerUI* ui = (SamplerUI*)handle; + + /* Create a dialog to select a sample file. */ + 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); + + /* Run the dialog, and return if it is cancelled. */ + if (gtk_dialog_run(GTK_DIALOG(dialog)) != GTK_RESPONSE_ACCEPT) { + gtk_widget_destroy(dialog); + return; + } + + /* Get the file path from the dialog. */ + char* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog)); + + /* Got what we need, destroy the dialog. */ + gtk_widget_destroy(dialog); + +#define OBJ_BUF_SIZE 1024 + uint8_t obj_buf[OBJ_BUF_SIZE]; + lv2_atom_forge_set_buffer(&ui->forge, obj_buf, OBJ_BUF_SIZE); + + LV2_Atom* msg = write_set_file(&ui->forge, &ui->uris, + filename, strlen(filename)); + + ui->write(ui->controller, 0, lv2_atom_total_size(msg), + ui->uris.atom_eventTransfer, + msg); + + g_free(filename); +} + +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->map = NULL; + ui->write = write_function; + ui->controller = controller; + ui->box = NULL; + ui->button = NULL; + ui->label = NULL; + + *widget = NULL; + + for (int i = 0; features[i]; ++i) { + if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) { + ui->map = (LV2_URID_Map*)features[i]->data; + } + } + + if (!ui->map) { + fprintf(stderr, "sampler_ui: Host does not support urid:Map\n"); + free(ui); + return NULL; + } + + map_sampler_uris(ui->map, &ui->uris); + + lv2_atom_forge_init(&ui->forge, ui->map); + + ui->box = gtk_vbox_new(FALSE, 4); + ui->label = gtk_label_new("?"); + ui->button = gtk_button_new_with_label("Load Sample"); + gtk_box_pack_start(GTK_BOX(ui->box), ui->label, TRUE, TRUE, 4); + gtk_box_pack_start(GTK_BOX(ui->box), ui->button, FALSE, FALSE, 4); + g_signal_connect(ui->button, "clicked", + G_CALLBACK(on_load_clicked), + ui); + + *widget = ui->box; + + 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) +{ + SamplerUI* ui = (SamplerUI*)handle; + if (format == ui->uris.atom_eventTransfer) { + LV2_Atom* atom = (LV2_Atom*)buffer; + if (atom->type == ui->uris.atom_Blank) { + LV2_Atom_Object* obj = (LV2_Atom_Object*)atom; + const LV2_Atom* file_uri = read_set_file(&ui->uris, obj); + if (!file_uri) { + fprintf(stderr, "Unknown message sent to UI.\n"); + return; + } + + const char* uri = (const char*)LV2_ATOM_BODY(file_uri); + gtk_label_set_text(GTK_LABEL(ui->label), uri); + } else { + fprintf(stderr, "Unknown message type.\n"); + } + } else { + fprintf(stderr, "Unknown format.\n"); + } +} + +static 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; + } +} |