Commit bca5bcc5 authored by Abdo Roig-Maranges's avatar Abdo Roig-Maranges
Browse files

let the document know about the current adjustments

The document object now has functions to set and get the position and
the viewport size.

The position is a relative position with respect to the size of the
entire document, i.e. position_y=0 means top of the document and
position_y=1 bottom.

The viewport size is stored in screen coordinates, in pixels.
parent a0a64832
......@@ -52,9 +52,13 @@ struct zathura_document_s {
int page_offset; /**< Page offset */
double cell_width; /**< width of a page cell in the document (not ransformed by scale and rotation) */
double cell_height; /**< height of a page cell in the document (not ransformed by scale and rotation) */
unsigned int view_width; /**< width of current viewport */
unsigned int view_height; /**< height of current viewport */
unsigned int pages_per_row; /**< number of pages in a row */
unsigned int first_page_column; /**< column of the first page */
unsigned int page_padding; /**< padding between pages */
double position_x; /**< X adjustment */
double position_y; /**< Y adjustment */
/**
* Document pages
......@@ -131,6 +135,10 @@ zathura_document_open(zathura_plugin_manager_t* plugin_manager, const char*
document->adjust_mode = ZATHURA_ADJUST_NONE;
document->cell_width = 0.0;
document->cell_height = 0.0;
document->view_height = 0;
document->view_width = 0;
document->position_x = 0.0;
document->position_y = 0.0;
/* open document */
zathura_plugin_functions_t* functions = zathura_plugin_get_functions(plugin);
......@@ -326,6 +334,46 @@ zathura_document_set_current_page_number(zathura_document_t* document, unsigned
document->current_page_number = current_page;
}
double
zathura_document_get_position_x(zathura_document_t* document)
{
if (document == NULL) {
return 0;
}
return document->position_x;
}
double
zathura_document_get_position_y(zathura_document_t* document)
{
if (document == NULL) {
return 0;
}
return document->position_y;
}
void
zathura_document_set_position_x(zathura_document_t* document, double position_x)
{
if (document == NULL) {
return;
}
document->position_x = position_x;
}
void
zathura_document_set_position_y(zathura_document_t* document, double position_y)
{
if (document == NULL) {
return;
}
document->position_y = position_y;
}
double
zathura_document_get_scale(zathura_document_t* document)
{
......@@ -416,6 +464,33 @@ zathura_document_set_page_offset(zathura_document_t* document, unsigned int page
document->page_offset = page_offset;
}
void
zathura_document_set_viewport_width(zathura_document_t* document, unsigned int width)
{
if (document == NULL) {
return;
}
document->view_width = width;
}
void
zathura_document_set_viewport_height(zathura_document_t* document, unsigned int height)
{
if (document == NULL) {
return;
}
document->view_height = height;
}
void
zathura_document_get_viewport_size(zathura_document_t* document,
unsigned int *height, unsigned int* width)
{
g_return_if_fail(document != NULL && height != NULL && width != NULL);
*height = document->view_height;
*width = document->view_width;
}
void
zathura_document_get_cell_size(zathura_document_t* document,
unsigned int* height, unsigned int* width)
......
......@@ -97,6 +97,42 @@ unsigned int zathura_document_get_current_page_number(zathura_document_t* docume
void zathura_document_set_current_page_number(zathura_document_t* document, unsigned
int current_page);
/**
* Returns the X position, as a value relative to the document width (0=left,
* 1=right).
*
* @param document The document
* @return X adjustment
*/
double zathura_document_get_position_x(zathura_document_t* document);
/**
* Returns the Y position as value relative to the document height (0=top,
* 1=bottom)
*
* @param document The document
* @return Y adjustment
*/
double zathura_document_get_position_y(zathura_document_t* document);
/**
* Sets the X position as a value relative to the document width (0=left,
* 1=right)
*
* @param document The document
* @param position_x the X adjustment
*/
void zathura_document_set_position_x(zathura_document_t* document, double position_x);
/**
* Sets the Y position as a value relative to the document height (0=top,
* 1=bottom)
*
* @param document The document
* @param position_y the Y adjustment
*/
void zathura_document_set_position_y(zathura_document_t* document, double position_y);
/**
* Returns the current scale value of the document
*
......@@ -178,9 +214,37 @@ void* zathura_document_get_data(zathura_document_t* document);
void zathura_document_set_data(zathura_document_t* document, void* data);
/**
* Return the size of a cell in the document's layout table, assuming that
* the table is homogeneous (i.e. every cell has the same dimensions). It takes
* the current scale into account.
* Sets the width of the viewport in pixels.
*
* @param[in] document The document instance
* @param[in] width The width of the viewport
*/
void
zathura_document_set_viewport_width(zathura_document_t* document, unsigned int width);
/**
* Sets the height of the viewport in pixels.
*
* @param[in] document The document instance
* @param[in] height The height of the viewport
*/
void
zathura_document_set_viewport_height(zathura_document_t* document, unsigned int height);
/**
* Return the size of the viewport in pixels.
*
* @param[in] document The document instance
* @param[out] height,width The width and height of the viewport
*/
void
zathura_document_get_viewport_size(zathura_document_t* document,
unsigned int *height, unsigned int* width);
/**
* Return the size of a cell from the document's layout table in pixels. Assumes
* that the table is homogeneous (i.e. every cell has the same dimensions). It
* takes the current scale into account.
*
* @param[in] document The document instance
* @param[out] height,width The computed height and width of the cell
......@@ -189,10 +253,9 @@ void zathura_document_get_cell_size(zathura_document_t* document,
unsigned int* height, unsigned int* width);
/**
* Compute the size of the entire document to be displayed (in pixels), taking
* into account the scale, the layout of the pages, and the padding between
* them. It should be equal to the allocation of zathura->ui.page_widget once
* it's shown.
* Compute the size of the entire document to be displayed in pixels. Takes into
* account the scale, the layout of the pages, and the padding between them. It
* should be equal to the allocation of zathura->ui.page_widget once it's shown.
*
* @param[in] document The document
* @param[out] height,width The height and width of the document
......
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