Add support for French translations

Not totally finished yet.  Later I would like to add more languages as
well.

For now I use a simple array of translations string directly set in a C
file (i18n.h/c) instead of using gettext, so that we don't have to use
any tooling.

src/action.h

@@ -48,7 +48,7 @@ typedef struct action action_t;
 struct action {
     int             idx;
     const char      *id;            // Globally unique id.
-    const char      *help;          // Help text.
+    int             help;           // Help text string id.
     int             flags;
     const char      *default_shortcut;
     char            shortcut[8];    // Can be changed at runtime.

src/actions.h

@@ -55,7 +55,7 @@ enum {
     X(add_selection),
     X(sub_selection),
     X(copy),
-    X(past),
+    X(paste),
     X(view_left),
     X(view_right),
     X(view_top),

src/formats/gltf.c

@@ -440,9 +440,9 @@ static int export_as_gltf(const file_format_t *format, const image_t *img,
 
 static void export_gui(file_format_t *format)
 {
-    gui_checkbox("Vertex color", &g_export_options.vertex_color,
-                 "Save colors as a vertex attribute");
-    gui_input_float("Simplify", &g_export_options.simplify, 0.1,
+    gui_checkbox(_(VERTEX_COLOR), &g_export_options.vertex_color,
+                 _(SAVE_COLORS_AS_VERTEX_ATTRIBUTE));
+    gui_input_float(_(SIMPLIFY), &g_export_options.simplify, 0.1,
                     0, 1, "%.1f");
 }
 

src/formats/gox.c

@@ -738,7 +738,6 @@ static void a_open(void)
 }
 
 ACTION_REGISTER(open,
-    .help = "Open an image",
     .cfunc = a_open,
     .default_shortcut = "Ctrl O",
 )
@@ -763,7 +762,6 @@ static void a_save_as(void)
 }
 
 ACTION_REGISTER(save_as,
-    .help = "Save the image as",
     .cfunc = a_save_as,
 )
 
@@ -789,7 +787,6 @@ static void a_save(void)
 }
 
 ACTION_REGISTER(save,
-    .help = "Save the image",
     .cfunc = a_save,
     .default_shortcut = "Ctrl S"
 )

src/formats/png.c

@@ -41,7 +41,7 @@ static void export_gui(file_format_t *format)
     maxsize /= 2; // Because png export already double it.
     goxel.show_export_viewport = true;
     gui_group_begin(NULL);
-    gui_checkbox("Custom size", &goxel.image->export_custom_size, NULL);
+    gui_checkbox(_(SIZE), &goxel.image->export_custom_size, NULL);
     if (!goxel.image->export_custom_size) {
         goxel.image->export_width = goxel.gui.viewport[2];
         goxel.image->export_height = goxel.gui.viewport[3];
@@ -57,7 +57,7 @@ static void export_gui(file_format_t *format)
     gui_enabled_end();
     gui_group_end();
 
-    gui_checkbox("Transparent background",
+    gui_checkbox(_(TRANSPARENT_BACKGROUND),
                  &goxel.image->export_transparent_background,
                  NULL);
 }

src/formats/wavefront.c

@@ -228,8 +228,7 @@ int ply_export(const file_format_t *format, const image_t *image,
 
 static void export_gui(file_format_t *format)
 {
-    gui_checkbox("Y-up", &g_export_options.y_up,
-                 "Use Y up instead of Z up");
+    gui_checkbox(_(Y_UP), &g_export_options.y_up, _(USE_Y_UP_CONVENTION));
 }
 
 static void get_file_data(void *ctx, const char *filename, const int is_mtl,

src/goxel.c

@@ -409,6 +409,7 @@ void goxel_reset(void)
         goxel.rend.settings.shadow = 0;
 
     goxel.snap_mask = SNAP_VOLUME | SNAP_IMAGE_BOX;
+    goxel.mask_mode = MODE_REPLACE;
 
     goxel.pathtracer = (pathtracer_t) {
         .num_samples = 512,
@@ -1331,7 +1332,7 @@ static void a_cut_as_new_layer(void)
 }
 
 ACTION_REGISTER(cut_as_new_layer,
-    .help = "Cut into a new layer",
+    .help = STR_ACTION_CUT_AS_NEW_LAYER,
     .cfunc = a_cut_as_new_layer,
     .flags = ACTION_TOUCH_IMAGE,
 )
@@ -1347,7 +1348,6 @@ static void a_reset_selection(void)
 }
 
 ACTION_REGISTER(reset_selection,
-    .help = "Reset the selection",
     .cfunc = a_reset_selection,
 )
 
@@ -1365,7 +1365,7 @@ static void a_fill_selection(void)
 }
 
 ACTION_REGISTER(fill_selection,
-    .help = "Fill the selection with the current paint settings",
+    .help = STR_ACTION_FILL_SELECTION_HELP,
     .cfunc = a_fill_selection,
     .flags = ACTION_TOUCH_IMAGE,
 )
@@ -1389,7 +1389,7 @@ static void a_add_selection(void)
 }
 
 ACTION_REGISTER(add_selection,
-    .help = "Add the selection to the current mask",
+    .help = STR_ACTION_ADD_SELECTION_HELP,
     .cfunc = a_add_selection,
 )
 
@@ -1406,7 +1406,7 @@ static void a_sub_selection(void)
 }
 
 ACTION_REGISTER(sub_selection,
-    .help = "Subtract the selection from the current mask",
+    .help = STR_ACTION_SUB_SELECTION_HELP,
     .cfunc = a_sub_selection,
 )
 
@@ -1426,7 +1426,7 @@ static void copy_action(void)
     }
 }
 
-static void past_action(void)
+static void paste_action(void)
 {
     volume_t *volume = goxel.image->active_layer->volume;
     volume_t *tmp;
@@ -1449,15 +1449,13 @@ static void past_action(void)
 }
 
 ACTION_REGISTER(copy,
-    .help = "Copy",
     .cfunc = copy_action,
     .default_shortcut = "Ctrl C",
     .flags = 0,
 )
 
-ACTION_REGISTER(past,
-    .help = "Past",
-    .cfunc = past_action,
+ACTION_REGISTER(paste,
+    .cfunc = paste_action,
     .default_shortcut = "Ctrl V",
     .flags = ACTION_TOUCH_IMAGE,
 )
@@ -1494,46 +1492,41 @@ static void a_view_toggle_ortho(void)
 }
 
 ACTION_REGISTER(view_left,
-    .help = "Set camera view to left",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_view_set,
     .data = (float[]){90, 90},
     .default_shortcut = "Ctrl 3",
 )
 
 ACTION_REGISTER(view_right,
-    .help = "Set camera view to right",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_view_set,
     .data = (float[]){-90, 90},
     .default_shortcut = "3",
 )
 
 ACTION_REGISTER(view_top,
-    .help = "Set camera view to top",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_view_set,
     .data = (float[]){0, 0},
     .default_shortcut = "7",
 )
 
 ACTION_REGISTER(view_default,
-    .help = "Set camera view to default",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = a_view_default,
     .default_shortcut = "0",
 )
 
 ACTION_REGISTER(view_front,
-    .help = "Set camera view to front",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_view_set,
     .data = (float[]){0, 90},
     .default_shortcut = "1",
 )
 
 ACTION_REGISTER(view_toggle_ortho,
-    .help = "Toggle between perspective and orthoggraphic view",
+    .help = STR_ACTION_VIEW_TOGGLE_ORTHO_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = a_view_toggle_ortho,
     .default_shortcut = "5",
@@ -1544,7 +1537,6 @@ static void quit(void)
     gui_query_quit();
 }
 ACTION_REGISTER(quit,
-    .help = "Quit the application",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = quit,
     .default_shortcut = "Ctrl Q",
@@ -1592,7 +1584,7 @@ static void a_reset(void)
 }
 
 ACTION_REGISTER(reset,
-    .help = "New",
+    .help = STR_ACTION_RESET_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = a_reset,
     .default_shortcut = "Ctrl N"
@@ -1602,15 +1594,13 @@ static void undo(void) { image_undo(goxel.image); }
 static void redo(void) { image_redo(goxel.image); }
 
 ACTION_REGISTER(undo,
-    .help = "Undo",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = undo,
     .default_shortcut = "Ctrl Z",
     .icon = ICON_ARROW_BACK,
 )
 
 ACTION_REGISTER(redo,
-    .help = "Redo",
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = redo,
     .default_shortcut = "Ctrl Y",
@@ -1629,7 +1619,7 @@ static void toggle_mode(void)
 }
 
 ACTION_REGISTER(toggle_mode,
-    .help = "Toggle the tool mode (add, sub, paint)",
+    .help = STR_ACTION_TOGGLE_MODE_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc = toggle_mode,
 )
@@ -1641,7 +1631,7 @@ static void a_set_mode(void *data)
 }
 
 ACTION_REGISTER(set_mode_add,
-    .help = "Set tool mode to 'add'",
+    .help = STR_ACTION_SET_MODE_ADD_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_set_mode,
     .data = (int[]){MODE_OVER},
@@ -1650,7 +1640,7 @@ ACTION_REGISTER(set_mode_add,
 )
 
 ACTION_REGISTER(set_mode_sub,
-    .help = "Set tool mode to 'sub'",
+    .help = STR_ACTION_SET_MODE_SUB_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_set_mode,
     .data = (int[]){MODE_SUB},
@@ -1659,7 +1649,7 @@ ACTION_REGISTER(set_mode_sub,
 )
 
 ACTION_REGISTER(set_mode_paint,
-    .help = "Set tool mode to 'sub'",
+    .help = STR_ACTION_SET_MODE_PAINT_HELP,
     .flags = ACTION_CAN_EDIT_SHORTCUT,
     .cfunc_data = a_set_mode,
     .data = (int[]){MODE_PAINT},

src/goxel.h

@@ -36,6 +36,7 @@
 #include "gesture.h"
 #include "gesture3d.h"
 #include "gui.h"
+#include "i18n.h"
 #include "image.h"
 #include "inputs.h"
 #include "layer.h"

src/gui.cpp

@@ -311,7 +311,6 @@ static void load_fonts_texture()
     const void *data;
     int data_size;
     ImFontConfig conf;
-
     const ImWchar ranges[] = {
         0x0020, 0x00FF, // Basic Latin + Latin Supplement
         0x25A0, 0x25FF, // Geometric shapes
@@ -321,8 +320,20 @@ static void load_fonts_texture()
 
     data = assets_get("asset://data/fonts/DejaVuSans.ttf", &data_size);
     assert(data);
-    io.Fonts->AddFontFromMemoryTTF((void*)data, data_size, 14 * scale,
-                                   &conf, ranges);
+    io.Fonts->AddFontFromMemoryTTF(
+            (void*)data, data_size, 14 * scale, &conf, ranges);
+
+    #if 0
+    conf.MergeMode = true;
+    data = assets_get(
+            "asset://data/fonts/DroidSansFallbackFull.ttf", &data_size);
+    assert(data);
+    io.Fonts->AddFontFromMemoryTTF(
+            (void*)data, data_size, 14 * scale, &conf,
+            io.Fonts->GetGlyphRangesJapanese());
+    #endif
+    io.Fonts->Build();
+
     io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
 
     GLuint tex_id;
@@ -915,12 +926,12 @@ bool gui_bbox(float box[4][4])
     y = round(box[3][1] - box[1][1]);
     z = round(box[3][2] - box[2][2]);
 
-    gui_group_begin("Origin");
+    gui_group_begin(_(ORIGIN));
     ret |= gui_input_int("x", &x, 0, 0);
     ret |= gui_input_int("y", &y, 0, 0);
     ret |= gui_input_int("z", &z, 0, 0);
     gui_group_end();
-    gui_group_begin("Size");
+    gui_group_begin(_(SIZE));
     ret |= gui_input_int("w", &w, 0, 0);
     ret |= gui_input_int("h", &h, 0, 0);
     ret |= gui_input_int("d", &d, 0, 0);
@@ -963,8 +974,8 @@ bool gui_action_button(int id, const char *label, float size)
     assert(action);
     ImGui::PushID(action->id);
     ret = gui_button(label, size, action->icon);
-    if (ImGui::IsItemHovered())
-        goxel_set_help_text(action_get(id, true)->help);
+    if (ImGui::IsItemHovered() && action->help)
+        goxel_set_help_text(tr(action->help));
     if (ret) {
         action_exec(action_get(id, true));
     }