/* LV2 Sampler Example Plugin UI Copyright 2011-2012 David Robillard 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 #include #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_hbox_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, TRUE, 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"); } } 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; } } id='n80' href='#n80'>80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169